CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-disabled skin-theme-clientpref-day vector-toc-available" lang="cy" dir="ltr"> <head> <meta charset="UTF-8"> <title>Deddf yr Iaith Gymraeg 1967 - Wicipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-disabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )cywikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy" ,"wgMonthNames":["","Ionawr","Chwefror","Mawrth","Ebrill","Mai","Mehefin","Gorffennaf","Awst","Medi","Hydref","Tachwedd","Rhagfyr"],"wgRequestId":"081ec2a7-3ee3-46eb-8b01-b3cad00f2306","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Deddf_yr_Iaith_Gymraeg_1967","wgTitle":"Deddf yr Iaith Gymraeg 1967","wgCurRevisionId":12909455,"wgRevisionId":12909455,"wgArticleId":21384,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Tudalennau gyda meysydd deublyg yn y Nodion","Pages using the JsonConfig extension","Erthyglau sy'n defnyddio Nodyn Gwybodlen pethau Wicidata","Webarchive template wayback links","Deddfau Cymreig","Deddfau Senedd y Deyrnas Unedig 1967","Gwleidyddiaeth Cymru","Hanes y Gymraeg","Hawliau iaith","1967"],"wgPageViewLanguage":"cy","wgPageContentLanguage":"cy","wgPageContentModel":"wikitext","wgRelevantPageName":"Deddf_yr_Iaith_Gymraeg_1967","wgRelevantArticleId": 21384,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":true,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"cy","pageLanguageDir":"ltr","pageVariantFallbacks":"cy"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":3000,"wgRelatedArticlesCompat":[],"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q7981934","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false, "wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["site","mediawiki.page.ready","jquery.makeCollapsible","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming", "ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=cy&modules=ext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=cy&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=cy&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.6"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Deddf yr Iaith Gymraeg 1967 - Wicipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//cy.m.wikipedia.org/wiki/Deddf_yr_Iaith_Gymraeg_1967"> <link rel="alternate" type="application/x-wiki" title="Golygu" href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wicipedia (cy)"> <link rel="EditURI" type="application/rsd+xml" href="//cy.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://cy.wikipedia.org/wiki/Deddf_yr_Iaith_Gymraeg_1967"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.cy"> <link rel="alternate" type="application/atom+xml" title="Ffrwd Atom Wicipedia" href="/w/index.php?title=Arbennig:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Deddf_yr_Iaith_Gymraeg_1967 rootpage-Deddf_yr_Iaith_Gymraeg_1967 skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Neidio i'r cynnwys</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Prif ddewislen" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Prif ddewislen</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Prif ddewislen</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">cuddio</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Panel llywio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage" class="mw-list-item"><a href="/wiki/Hafan" title="Ymweld â'r Hafan [z]" accesskey="z"><span>Hafan</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wicipedia:Porth_y_Gymuned" title="Pethau i'w gwneud, adnoddau a thudalennau'r gymuned"><span>Porth y Gymuned</span></a></li><li id="n-cafe" class="mw-list-item"><a href="/wiki/Wicipedia:Y_Caffi"><span>Y Caffi</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Categori:Materion_cyfoes" title="Gwybodaeth yn gysylltiedig â materion cyfoes"><span>Materion cyfoes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Arbennig:RecentChanges" title="Rhestr y newidiadau diweddar ar y wici. [r]" accesskey="r"><span>Newidiadau diweddar</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Arbennig:Random" title="Llwytho tudalen ar hap [x]" accesskey="x"><span>Erthygl ar hap</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Wicipedia:Cymorth" title="Tudalennau cymorth"><span>Cymorth</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Hafan" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wicipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-cy.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-cy.svg" width="120" height="13" style="width: 7.5em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Arbennig:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Chwilio Wicipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Chwilio</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Chwilio Wicipedia" aria-label="Chwilio Wicipedia" autocapitalize="sentences" title="Chwilio Wicipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Arbennig:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Chwilio</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Offer personol"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Newidiwch ymddangosiad maint ffont, lled a lliw y dudalen" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Gwedd" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Gwedd</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=cy.wikipedia.org&uselang=cy" class=""><span>Rhoi</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Arbennig:CreateAccount&returnto=Deddf+yr+Iaith+Gymraeg+1967" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol" class=""><span>Creu cyfrif</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Arbennig:UserLogin&returnto=Deddf+yr+Iaith+Gymraeg+1967" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o" class=""><span>Mewngofnodi</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Rhagor o opsiynau" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Offer personol" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Offer personol</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Dewislen defnyddiwr" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=cy.wikipedia.org&uselang=cy"><span>Rhoi</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:CreateAccount&returnto=Deddf+yr+Iaith+Gymraeg+1967" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Creu cyfrif</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:UserLogin&returnto=Deddf+yr+Iaith+Gymraeg+1967" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Mewngofnodi</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Tudalennau ar gyfer golygyddion allgofnodedig <a href="/wiki/Cymorth:Cyflwyniad" aria-label="Dysgu mwy am olygu"><span>dysgu mwy</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Arbennig:MyContributions" title="Rhestr golygiadau o'r cyfeiriad IP hwn [y]" accesskey="y"><span>Cyfraniadau</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Arbennig:MyTalk" title="Sgwrs ynglŷn â golygiadau o'r cyfeiriad IP hwn [n]" accesskey="n"><span>Sgwrs</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Cynnwys" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Cynnwys</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">cuddio</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Y dechrau</div> </a> </li> <li id="toc-Gweler_hefyd" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Gweler_hefyd"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Gweler hefyd</span> </div> </a> <ul id="toc-Gweler_hefyd-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Dolen_allanol" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dolen_allanol"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Dolen allanol</span> </div> </a> <ul id="toc-Dolen_allanol-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Cynnwys" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toglo'r tabl cynnwys" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toglo'r tabl cynnwys</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Deddf yr Iaith Gymraeg 1967</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ewch i erthygl mewn iaith arall. Ar gael mewn 1 iaith" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-1" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">1 iaith</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Welsh_Language_Act_1967" title="Welsh Language Act 1967 - Saesneg" lang="en" hreflang="en" data-title="Welsh Language Act 1967" data-language-autonym="English" data-language-local-name="Saesneg" class="interlanguage-link-target"><span>English</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7981934#sitelinks-wikipedia" title="Golygu dolenni rhyngwici" class="wbc-editpage">Golygu dolenni</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Parthau"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Deddf_yr_Iaith_Gymraeg_1967" title="Gweld y dudalen bwnc [c]" accesskey="c"><span>Erthygl</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Sgwrs:Deddf_yr_Iaith_Gymraeg_1967" rel="discussion" title="Sgwrsio am y dudalen [t]" accesskey="t"><span>Sgwrs</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Newid amrywiad iaith" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Cymraeg</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Golygon"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Deddf_yr_Iaith_Gymraeg_1967"><span>Darllen</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=history" title="Fersiynau cynt o'r dudalen hon. [h]" accesskey="h"><span>Gweld hanes</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Blwch offer" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Blwch offer</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Blwch offer</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">cuddio</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Rhagor o opsiynau" > <div class="vector-menu-heading"> Gweithredoedd </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Deddf_yr_Iaith_Gymraeg_1967"><span>Darllen</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=history"><span>Gweld hanes</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Cyffredinol </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Arbennig:WhatLinksHere/Deddf_yr_Iaith_Gymraeg_1967" title="Rhestr o bob tudalen sy'n cysylltu â hon [j]" accesskey="j"><span>Beth sy'n cysylltu yma</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Arbennig:RecentChangesLinked/Deddf_yr_Iaith_Gymraeg_1967" rel="nofollow" title="Newidiadau diweddar i dudalennau sydd yn cysylltu â hon [k]" accesskey="k"><span>Newidiadau perthnasol</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Arbennig:SpecialPages" title="Rhestr o'r holl dudalennau arbennig [q]" accesskey="q"><span>Tudalennau arbennig</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&oldid=12909455" title="Dolen barhaol i'r fersiwn hwn y dudalen hon"><span>Dolen barhaol</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=info" title="Mwy o wybodaeth am y dudalen hon"><span>Gwybodaeth am y dudalen</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Arbennig:CiteThisPage&page=Deddf_yr_Iaith_Gymraeg_1967&id=12909455&wpFormIdentifier=titleform" title="Gwybodaeth ar sut i gyfeirio at y dudalen hon"><span>Cyfeirio at y dudalen hon</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Arbennig:UrlQ%C4%B1sald%C4%B1c%C4%B1s%C4%B1&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FDeddf_yr_Iaith_Gymraeg_1967"><span>Cael URL byr</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Arbennig:QrKodu&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FDeddf_yr_Iaith_Gymraeg_1967"><span>Lawrlwytho cod QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Argraffu / allforio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Arbennig:Book&bookcmd=book_creator&referer=Deddf+yr+Iaith+Gymraeg+1967"><span>Llunio llyfr</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Arbennig:DownloadAsPdf&page=Deddf_yr_Iaith_Gymraeg_1967&action=show-download-screen"><span>Lawrlwytho fel PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&printable=yes" title="Cynhyrchwch fersiwn o'r dudalen yn barod at ei hargraffu [p]" accesskey="p"><span>Fersiwn argraffu</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Mewn prosiectau eraill </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7981934" title="Cysylltu i eitem ystorfa gysylltiedig [g]" accesskey="g"><span>Eitem Wicidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Gwedd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">cuddio</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Oddi ar Wicipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="cy" dir="ltr"><table class="infobox" style="width:22em"><caption>Deddf yr Iaith Gymraeg 1967</caption><tbody><tr><th scope="row">Enghraifft o'r canlynol</th><td>Deddf Gyhoeddus Gyffredinol Senedd y Deyrnas Unedig <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7981934?uselang=cy#P31" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Iaith</th><td><a href="/wiki/Saesneg" title="Saesneg">Saesneg</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7981934?uselang=cy#P407" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Dyddiad cyhoeddi</th><td>1967 <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7981934?uselang=cy#P577" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Prif bwnc</th><td><a href="/wiki/Cymraeg" title="Cymraeg">Cymraeg</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7981934?uselang=cy#P921" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Gwladwriaeth</th><td><a href="/wiki/Y_Deyrnas_Unedig" title="Y Deyrnas Unedig">y Deyrnas Unedig</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7981934?uselang=cy#P17" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <p><a href="/wiki/Deddf" class="mw-redirect" title="Deddf">Deddf</a> <a href="/wiki/San_Steffan" class="mw-redirect" title="San Steffan">seneddol</a> oedd <b>Deddf yr Iaith Gymraeg 1967</b> (dyfyniad seneddol: 1967 c. 66), a roes hawliau cyfyngedig i ddefnyddio'r iaith <a href="/wiki/Gymraeg" class="mw-redirect" title="Gymraeg">Gymraeg</a> mewn <a href="/wiki/Cyfraith" title="Cyfraith">achosion cyfreithiol</a> yng <a href="/wiki/Cymru" title="Cymru">Nghymru</a> ac a roes yn ogystal yr awdurdod i weinidog yn <a href="/wiki/Llywodraeth_Prydain" class="mw-redirect" title="Llywodraeth Prydain">llywodraeth Prydain</a> gyhoeddi fersiwn neu fersiynau Cymraeg o unrhyw ddogfennau a ddeuai dan ystod y ddeddf honno. </p><p>Roedd y Ddeddf yn seiliedig ar 'Arolwg Hughes-Parry' a gomisiynwyd gan y llywodraeth dan bwysau gan Gymry amlwg i ymchwilio i statws yr iaith Gymraeg yng Nghymru. Cyhoeddwyd yr arolwg yn <a href="/wiki/1965" title="1965">1965</a>. Argymhellodd statws cyfartal i'r Gymraeg a'r <a href="/wiki/Saesneg" title="Saesneg">Saesneg</a> ar lafar ac yn ysgrifenedig, yn llysoedd Cymru ac adrannau gweinyddol y wlad. Fodd bynnag gwrthododd y llywodraeth Brydeinig nifer o argymhellion pwysig ac roedd y Ddeddf yn adlewyrchiad gwan o'r Arolwg ei hun. Cadeirydd y pwyllgor a gyhoeddodd yr Arolwg oedd <a href="/wiki/David_Hughes_Parry" title="David Hughes Parry">Dafydd Hughes Parry</a>. </p><p>Mae'r Ddeddf yn fer iawn, gyda Chyflwyniad a phum Adran yn unig. Yn y Cyflwyniad cydnabyddir yr egwyddor - ond nid yr <i>hawl</i> ddiwrthod - i ddefnyddio'r iaith ar lafar mewn achosion cyfreithiol ("<i>it is proper that the Welsh language should be freely used by those who so desire in the hearing of legal proceedings in Wales</i>"). Ond roedd rhaid i Gymro neu Gymraes roi rhybudd o flaen llaw i'r llys er mwyn gallu gwneud hynny (Adran 1). Roedd gan weinidogion yr hawl i gyhoeddi adroddiadau yn y Gymraeg ond dim dyletswydd arnynt i wneud hynny (Adran 2-3). Yn y bedwaredd adran dileuwyd statws Cymru fel rhan o Loegr (Rhan 3 <a href="/wiki/Deddf_Cymru_a_Berwick_1746" title="Deddf Cymru a Berwick 1746">Deddf Cymru a Berwick 1746</a>); dyma gymal pwysicaf y Ddeddf efallai, er na roddwyd llawer o sylw iddo ar y pryd. </p><p>Er gwaethaf ei maes cyfyng a ffaeleddau amlwg eraill yr oedd y Ddeddf yn garreg filltir yn <a href="/wiki/Cymraeg" title="Cymraeg">hanes yr iaith Gymraeg</a> a pherthynas Cymru â Lloegr. Roedd <a href="/wiki/Y_Deddfau_Uno_1536_a_1543" class="mw-redirect" title="Y Deddfau Uno 1536 a 1543">Y Deddfau Uno</a> wedi gwneud Saesneg yr unig iaith swyddogol yng Nghymru a gwrthod yr iaith Gymraeg yn gyfangwbl. Deddf 1967 oedd y newid cyntaf i'r sefyllfa honno mewn pedwar can mlynedd. Ond bu rhaid aros tan <a href="/wiki/Deddf_yr_Iaith_Gymraeg_1993" title="Deddf yr Iaith Gymraeg 1993">Ddeddf yr Iaith Gymraeg 1993</a> i'r Gymraeg gael statws cyfartal â Saesneg, ar bapur o leiaf, ym mywyd cyhoeddus Cymru. </p> <div class="mw-heading mw-heading2"><h2 id="Gweler_hefyd">Gweler hefyd</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&veaction=edit&section=1" title="Golygu'r adran: Gweler hefyd" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=edit&section=1" title="Edit section's source code: Gweler hefyd"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i><a href="/wiki/David_Hughes_Parry:_A_Jurist_in_Society" title="David Hughes Parry: A Jurist in Society">David Hughes Parry: A Jurist in Society</a></i></li></ul> <div class="mw-heading mw-heading2"><h2 id="Dolen_allanol">Dolen allanol</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&veaction=edit&section=2" title="Golygu'r adran: Dolen allanol" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&action=edit&section=2" title="Edit section's source code: Dolen allanol"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.deddfiaith.org/">Gwefan Deddf Iaith Newydd</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080219074447/http://deddfiaith.org/">Archifwyd</a> 2008-02-19 yn y <a href="/wiki/Peiriant_Wayback" title="Peiriant Wayback">Peiriant Wayback</a></li></ul> <div role="navigation" class="navbox" aria-labelledby="22x20px&#124;border_&#124;alt=Cymru&#124;link=Cymru_Cymraeg" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><a href="/wiki/Nodyn:Cymraeg" title="Nodyn:Cymraeg"><abbr title="View this template" style=";;background:none transparent;color:inherit;border:none;box-shadow:none;padding:0;">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Sgwrs_Nodyn:Cymraeg" title="Sgwrs Nodyn:Cymraeg"><abbr title="Discuss this template" style=";;background:none transparent;color:inherit;border:none;box-shadow:none;padding:0;">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://cy.wikipedia.org/w/index.php?title=Nodyn:Cymraeg&action=edit"><abbr title="Edit this template" style=";;background:none transparent;color:inherit;border:none;box-shadow:none;padding:0;">e</abbr></a></li></ul></div><div id="22x20px&#124;border_&#124;alt=Cymru&#124;link=Cymru_Cymraeg" style="font-size:114%;margin:0 4em"><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><a href="/wiki/Cymru" title="Cymru"><img alt="Cymru" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/22px-Flag_of_Wales.svg.png" decoding="async" width="22" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/33px-Flag_of_Wales.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/44px-Flag_of_Wales.svg.png 2x" data-file-width="800" data-file-height="480" /></a></span></span> <a href="/wiki/Cymraeg" title="Cymraeg">Cymraeg</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hanes_y_Gymraeg" title="Hanes y Gymraeg">Hanes y Gymraeg</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Brythoneg" title="Brythoneg">Brythoneg</a></li> <li><a href="/wiki/Hen_Gymraeg" title="Hen Gymraeg">Hen Gymraeg</a></li> <li><a href="/wiki/Cymraeg_Canol" title="Cymraeg Canol">Cymraeg Canol</a></li> <li><a href="/wiki/Hanes_y_Gymraeg" title="Hanes y Gymraeg">Cymraeg Fodern</a></li> <li><a href="/wiki/Welsh_Not" title="Welsh Not">Welsh Not</a></li> <li><a href="/wiki/Brad_y_Llyfrau_Gleision" title="Brad y Llyfrau Gleision">Brad y Llyfrau Gleision</a></li> <li><a href="/wiki/Arwyddion_ffyrdd_Cymru" title="Arwyddion ffyrdd Cymru">Arwyddion ffyrdd</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Ieithyddiaeth</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Gramadeg_y_Gymraeg" title="Gramadeg y Gymraeg">Gramadeg</a></li> <li><a href="/wiki/Rhifau_yn_y_Gymraeg" title="Rhifau yn y Gymraeg">Rhifau yn y Gymraeg</a></li> <li><a href="/wiki/Orgraff_y_Gymraeg" title="Orgraff y Gymraeg">Orgraff y Gymraeg</a> <ul><li><a href="/wiki/Braille_Cymraeg" title="Braille Cymraeg">Braille Cymraeg</a></li> <li><a href="/wiki/%E1%BB%BC" title="Ỽ">Ỽ</a></li></ul></li> <li>Geiriau <ul><li><a href="/wiki/Geiriadur_yr_Academi" title="Geiriadur yr Academi">Geiriadur yr Academi</a></li> <li><a href="/wiki/Geiriadur_Prifysgol_Cymru" title="Geiriadur Prifysgol Cymru">Geiriadur Prifysgol Cymru</a></li></ul></li> <li><a href="/wiki/Toponymeg_Cymru" title="Toponymeg Cymru">Toponymeg Cymru</a> <ul><li><a href="/wiki/Enwau_lleoedd_o_darddiad_Cymreig_yn_yr_Unol_Daleithiau" title="Enwau lleoedd o darddiad Cymreig yn yr Unol Daleithiau">Yn UDA</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Llenyddiaeth_Gymraeg" title="Llenyddiaeth Gymraeg">llenyddiaeth</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Rhestr_awduron_Cymraeg_(1600%E2%80%93heddiw)" title="Rhestr awduron Cymraeg (1600–heddiw)">Rhestr awduron Cymraeg (1600–heddiw)</a> <ul><li><a href="/wiki/Mytholeg_Gymreig" title="Mytholeg Gymreig">Mytholeg Gymreig</a></li> <li><a href="/wiki/Trioedd_Ynys_Prydain" title="Trioedd Ynys Prydain">Trioedd Ynys Prydain</a></li> <li><a href="/wiki/Mabinogion" class="mw-redirect" title="Mabinogion">Mabinogion</a></li></ul></li> <li><a href="/wiki/Addysg_Gymraeg" title="Addysg Gymraeg">Addysg Gymraeg</a> <ul><li><a href="/wiki/Mudiad_Ysgolion_Meithrin" title="Mudiad Ysgolion Meithrin">Mudiad Ysgolion Meithrin</a></li> <li><a href="/wiki/Wlpan" title="Wlpan">Wlpan</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Demograffeg</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Poblogaeth_siaradwyr_Cymraeg" title="Poblogaeth siaradwyr Cymraeg">Poblogaeth siaradwyr Cymraeg</a></li> <li><a href="/wiki/Y_Fro_Gymraeg" title="Y Fro Gymraeg">Y Fro Gymraeg</a></li> <li><a href="/wiki/Llinell_Landsker" class="mw-redirect" title="Llinell Landsker">Llinell Landsker</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cyfryngau_Cymraeg" class="mw-redirect" title="Cyfryngau Cymraeg">Cyfryngau Cymraeg</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Rhestr_rhaglenni_teledu_Cymraeg" title="Rhestr rhaglenni teledu Cymraeg">Rhestr rhaglenni teledu Cymraeg</a></li> <li><a href="/wiki/S4C" title="S4C">S4C</a></li> <li><a href="/wiki/BBC_Radio_Cymru" title="BBC Radio Cymru">BBC Radio Cymru</a></li> <li><a href="/wiki/Capital_Cymru" title="Capital Cymru">Capital Cymru</a></li> <li><a href="/wiki/Golwg" title="Golwg">Golwg</a></li> <li><a href="/wiki/Golwg360" title="Golwg360">Golwg360</a></li> <li><a href="/wiki/Maes-e" title="Maes-e">Maes-e</a></li> <li><a href="/wiki/Tafod_y_Ddraig" class="mw-redirect" title="Tafod y Ddraig">Tafod y Ddraig</a></li> <li><a href="/wiki/Y_Cymro" title="Y Cymro">Y Cymro</a></li> <li><a href="/wiki/Barn_(cylchgrawn)" title="Barn (cylchgrawn)">Barn</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Categori:Cerddoriaeth_Gymraeg" title="Categori:Cerddoriaeth Gymraeg">Cerddoriaeth</a> a gwyliau</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Eisteddfod_Genedlaethol_Cymru" title="Eisteddfod Genedlaethol Cymru">Eisteddfod Genedlaethol Cymru</a></li> <li><a href="/wiki/Eisteddfod_Genedlaethol_yr_Urdd" title="Eisteddfod Genedlaethol yr Urdd">Eisteddfod Genedlaethol yr Urdd</a></li> <li><a href="/wiki/Sesiwn_Fawr_Dolgellau" title="Sesiwn Fawr Dolgellau">Sesiwn Fawr Dolgellau</a></li> <li><a href="/wiki/Diwrnod_Shwmae_Sumae" title="Diwrnod Shwmae Sumae">Diwrnod Shwmae Sumae</a></li> <li><a href="/wiki/Tafwyl" title="Tafwyl">Tafwyl</a></li> <li><a href="/wiki/Gwobrau%E2%80%99r_Selar" title="Gwobrau’r Selar">Gwobrau’r Selar</a></li> <li><a href="/wiki/Dydd_Miwsig_Cymru" title="Dydd Miwsig Cymru">Dydd Miwsig Cymru</a></li> <li><a href="/wiki/Dysgwr_y_Flwyddyn" title="Dysgwr y Flwyddyn">Dysgwr y Flwyddyn</a></li> <li><a href="/wiki/Nant_Gwrtheyrn" title="Nant Gwrtheyrn">Nant Gwrtheyrn</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Llywodraethiant</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li>Gweinidog Addysg a'r iaith Gymraeg: <a href="/wiki/Jeremy_Miles" title="Jeremy Miles">Jeremy Miles</a></li> <li><a href="/wiki/Comisiynydd_yr_Iaith_Gymraeg" class="mw-redirect" title="Comisiynydd yr Iaith Gymraeg">Comisiynydd yr Iaith Gymraeg</a></li> <li><a href="/wiki/Bwrdd_yr_Iaith_Gymraeg" title="Bwrdd yr Iaith Gymraeg">Bwrdd yr Iaith Gymraeg</a> (darfod)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Grwpiau</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Coleg_Cymraeg_Cenedlaethol" class="mw-redirect" title="Coleg Cymraeg Cenedlaethol">Coleg Cymraeg Cenedlaethol</a></li> <li><a href="/wiki/Cymdeithas_Cymreigyddion_Y_Fenni" title="Cymdeithas Cymreigyddion Y Fenni">Cymdeithas Cymreigyddion Y Fenni</a></li> <li><a href="/wiki/Cymdeithas_yr_Iaith_Gymraeg" class="mw-redirect" title="Cymdeithas yr Iaith Gymraeg">Cymdeithas yr Iaith Gymraeg</a></li> <li><a href="/wiki/Cymuned" title="Cymuned">Cymuned</a></li> <li><a href="/wiki/Dyfodol_i%27r_Iaith" title="Dyfodol i'r Iaith">Dyfodol i'r Iaith</a></li> <li><a href="/wiki/Menter_Iaith" title="Menter Iaith">Menter Iaith</a></li> <li><a href="/wiki/Mudiad_Adfer" title="Mudiad Adfer">Mudiad Adfer</a></li> <li><a href="/wiki/Urdd_Gobaith_Cymru" title="Urdd Gobaith Cymru">Urdd Gobaith Cymru</a></li> <li><a href="/wiki/Cymdeithas_Cyfieithwyr_Cymru" title="Cymdeithas Cyfieithwyr Cymru">Cymdeithas Cyfieithwyr Cymru</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Cyfraith</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Deddfau%27r_Cyfreithiau_yng_Nghymru_1536_a_1542" title="Deddfau'r Cyfreithiau yng Nghymru 1536 a 1542">Deddfau'r Cyfreithiau yng Nghymru 1536 a 1542</a></li> <li><a href="/wiki/Deddf_Llysoedd_Cymreig_1942" title="Deddf Llysoedd Cymreig 1942">Deddf Llysoedd Cymreig 1942</a></li> <li><a class="mw-selflink selflink">Deddf yr Iaith Gymraeg 1967</a></li> <li><a href="/wiki/Deddf_yr_Iaith_Gymraeg_1993" title="Deddf yr Iaith Gymraeg 1993">Deddf yr Iaith Gymraeg 1993</a></li> <li><a href="/wiki/Mesur_y_Gymraeg_(Cymru)_2011" title="Mesur y Gymraeg (Cymru) 2011">Mesur y Gymraeg (Cymru) 2011</a></li> <li><a href="/wiki/Deddf_Cynulliad_Cenedlaethol_Cymru_(Ieithoedd_Swyddogol)_2012" title="Deddf Cynulliad Cenedlaethol Cymru (Ieithoedd Swyddogol) 2012">Deddf Cynulliad Cenedlaethol Cymru (Ieithoedd Swyddogol) 2012</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><a href="/wiki/Wicipedia:WiciBrosiect_Cymru" title="Wicipedia:WiciBrosiect Cymru">WiciBrosiect Cymru</a></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Wedi dod o "<a dir="ltr" href="https://cy.wikipedia.org/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&oldid=12909455">https://cy.wikipedia.org/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&oldid=12909455</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Arbennig:Categories" title="Arbennig:Categories">Categorïau</a>: <ul><li><a href="/wiki/Categori:Deddfau_Cymreig" title="Categori:Deddfau Cymreig">Deddfau Cymreig</a></li><li><a href="/wiki/Categori:Deddfau_Senedd_y_Deyrnas_Unedig_1967" title="Categori:Deddfau Senedd y Deyrnas Unedig 1967">Deddfau Senedd y Deyrnas Unedig 1967</a></li><li><a href="/wiki/Categori:Gwleidyddiaeth_Cymru" title="Categori:Gwleidyddiaeth Cymru">Gwleidyddiaeth Cymru</a></li><li><a href="/wiki/Categori:Hanes_y_Gymraeg" title="Categori:Hanes y Gymraeg">Hanes y Gymraeg</a></li><li><a href="/wiki/Categori:Hawliau_iaith" title="Categori:Hawliau iaith">Hawliau iaith</a></li><li><a href="/wiki/Categori:1967" title="Categori:1967">1967</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categori cudd: <ul><li><a href="/wiki/Categori:Tudalennau_gyda_meysydd_deublyg_yn_y_Nodion" title="Categori:Tudalennau gyda meysydd deublyg yn y Nodion">Tudalennau gyda meysydd deublyg yn y Nodion</a></li><li><a href="/wiki/Categori:Pages_using_the_JsonConfig_extension" title="Categori:Pages using the JsonConfig extension">Pages using the JsonConfig extension</a></li><li><a href="/wiki/Categori:Erthyglau_sy%27n_defnyddio_Nodyn_Gwybodlen_pethau_Wicidata" title="Categori:Erthyglau sy'n defnyddio Nodyn Gwybodlen pethau Wicidata">Erthyglau sy'n defnyddio Nodyn Gwybodlen pethau Wicidata</a></li><li><a href="/wiki/Categori:Webarchive_template_wayback_links" title="Categori:Webarchive template wayback links">Webarchive template wayback links</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Golygwyd y dudalen hon ddiwethaf ar 27 Gorffennaf 2024, am 11:59.</li> <li id="footer-info-copyright">Mae'r testun ar gael o dan <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-ShareAlike License</a>; gall telerau ychwanegol fod yn berthnasol. Gweler y <a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">Telerau Gwasanaeth</a> am fanylion.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Polisi preifatrwydd</a></li> <li id="footer-places-about"><a href="/wiki/Wicipedia:Yngl%C5%B7n_%C3%A2_Wicipedia">Ynglŷn â Wicipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wicipedia:Gwadiad_Cyffredinol">Gwadiadau</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Cod Ymddygiad</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Datblygwyr</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/cy.wikipedia.org">Ystadegau</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Datganiad cwcis</a></li> <li id="footer-places-mobileview"><a href="//cy.m.wikipedia.org/w/index.php?title=Deddf_yr_Iaith_Gymraeg_1967&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Golwg symudol</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-5ccf8d5c58-thdmf","wgBackendResponseTime":121,"wgPageParseReport":{"limitreport":{"cputime":"0.245","walltime":"0.377","ppvisitednodes":{"value":3341,"limit":1000000},"postexpandincludesize":{"value":26615,"limit":2097152},"templateargumentsize":{"value":3095,"limit":2097152},"expansiondepth":{"value":11,"limit":100},"expensivefunctioncount":{"value":1,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":0,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 341.381 1 -total"," 90.81% 310.019 1 Nodyn:Pethau"," 85.52% 291.950 1 Nodyn:Infobox"," 39.43% 134.613 100 Nodyn:If_first_display_both"," 5.49% 18.741 1 Nodyn:Yr_Iaith_Gymraeg"," 4.63% 15.795 1 Nodyn:Navbox"," 3.87% 13.201 2 Nodyn:Wikidata"," 3.63% 12.406 1 Nodyn:Webarchive"," 2.17% 7.394 1 Nodyn:Flagicon"," 1.42% 4.833 1 Nodyn:PAGENAMEBASE"]},"scribunto":{"limitreport-timeusage":{"value":"0.125","limit":"10.000"},"limitreport-memusage":{"value":3938247,"limit":52428800}},"cachereport":{"origin":"mw-api-ext.eqiad.main-bbdd8b676-g4tsv","timestamp":"20241125184230","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Deddf yr Iaith Gymraeg 1967","url":"https:\/\/cy.wikipedia.org\/wiki\/Deddf_yr_Iaith_Gymraeg_1967","sameAs":"http:\/\/www.wikidata.org\/entity\/Q7981934","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q7981934","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2007-04-05T21:36:54Z","dateModified":"2024-07-27T11:59:40Z"}</script> </body> </html>