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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="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_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=Sefydliad+Materion+Cymreig" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. 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class="vector-toc-numb">2</span> <span>Cyfeiriadau</span> </div> </a> <ul id="toc-Cyfeiriadau-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Dolenni_allanol" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dolenni_allanol"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Dolenni allanol</span> </div> </a> <ul id="toc-Dolenni_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 " 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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>Sefydliad Materion Cymreig</caption><tbody><tr><td colspan="2" style="text-align:center"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/Delwedd:Institute_of_Welsh_Affairs.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Institute_of_Welsh_Affairs.jpg/220px-Institute_of_Welsh_Affairs.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Institute_of_Welsh_Affairs.jpg/330px-Institute_of_Welsh_Affairs.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Institute_of_Welsh_Affairs.jpg/440px-Institute_of_Welsh_Affairs.jpg 2x" data-file-width="1400" data-file-height="1400" /></a></span></td></tr><tr><th scope="row">Enghraifft o'r canlynol</th><td>sefydliad, <a href="/wiki/Sefydliad_elusennol" title="Sefydliad elusennol">sefydliad elusennol</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q3309454?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">Dechrau/Sefydlu</th><td>1987 <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q3309454?uselang=cy#P571" 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">Ffurf gyfreithiol</th><td><a href="/wiki/Sefydliad_elusennol" title="Sefydliad elusennol">sefydliad elusennol</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q3309454?uselang=cy#P1454" 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/Q3309454?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><tr><th scope="row">Gwefan</th><td><a rel="nofollow" class="external free" href="https://www.iwa.wales/">https://www.iwa.wales/</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q3309454?uselang=cy#P856" 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>Sefydliad annibynnol yng Nghymru, yn seiliedig ar aelodaeth a heb fod ynghlwm wrth unrhyw grŵp gwleidyddol neu economaidd, sy'n ceisio ysgogi gwelliannau ym mywyd <a href="/wiki/Cymru" title="Cymru">Cymru</a> yw'r <b>Sefydliad Materion Cymreig</b> (<a href="/wiki/Saesneg" title="Saesneg">Saesneg</a>: <i>The Institute of Welsh Affairs</i>; <i>IWA</i>). Mae'n enghraifft prin o <a href="/wiki/Melin_drafod" title="Melin drafod">felin drafod</a> Gymreig. </p><p>Mae ei ymchwil yn canolbwyntio ar <a href="/wiki/Gwleidyddiaeth_Cymru" title="Gwleidyddiaeth Cymru">wleidyddiaeth</a>, <a href="/wiki/Diwylliant_Cymru" title="Diwylliant Cymru">diwylliant</a> ac <a href="/wiki/Economi_Cymru" title="Economi Cymru">economi</a> Cymru, a thechnoleg a gwyddoniaeth yn y wlad, gyda'r amcan o ddatblygu cynigion i "wella a newyddu polisi" a hyrwyddo meddwl newydd ar faterion Cymreig. Mae'r sefydliad yn cyhoeddi sawl adroddiad ar ei ymchwil, yn cyhoeddi'r bwletin <i>agenda</i>, ac yn trefnu seminarau a chynhadleoedd i annog trafodaeth ar y pynciau a godir. </p><p>Cafodd ei sefydlu yn 1985 gan <a href="/wiki/Geraint_Talfan_Davies" title="Geraint Talfan Davies">Geraint Talfan Davies</a>, mab y llenor <a href="/wiki/Aneirin_Talfan_Davies" title="Aneirin Talfan Davies">Aneirin Talfan Davies</a>. Yn 1996, cyflogwyd y cyfarwyddwr llawn amser cyntaf, <a href="/wiki/John_Osmond" title="John Osmond">John Osmond</a>. Yn Ebrill 2013 fe'i olynwyd gan gyfarwyddwr newydd, <a href="/wiki/Lee_Waters" title="Lee Waters">Lee Waters</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Etholwyd Waters fel aelod o <a href="/wiki/Cynulliad_Cenedlaethol_Cymru" class="mw-redirect" title="Cynulliad Cenedlaethol Cymru">Gynulliad Cenedlaethol Cymru</a> yn Mai 2016 a sefodd lawr fel cyfarwyddwyr. Yng Ngorffennaf 2016 penodwyd Auriol Miller fel cyfarwyddwyr newydd i ddechrau ei gwaith yn hydref 2016.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Mae gan y SMC tua 1,200 aelod unigol a 150 aelod corfforaethol, a 100 Cymrawd. Mae'n gwmni ac yn elusen gofrestredig. Mae'r aelodau corfforaethol yn cynnwys <a href="/wiki/Cyngor_Celfyddydau_Cymru" title="Cyngor Celfyddydau Cymru">Cyngor Celfyddydau Cymru</a>, <a href="/wiki/BBC_Cymru" title="BBC Cymru">BBC Cymru</a>, <a href="/w/index.php?title=Nwy_Prydain&action=edit&redlink=1" class="new" title="Nwy Prydain (dim tudalen ar gael)">Nwy Prydain</a>, <a href="/wiki/Cyngor_Dinas_Caerdydd" class="mw-redirect" title="Cyngor Dinas Caerdydd">Cyngor Dinas Caerdydd</a>, Dur Corus, Deloitte, Eversheds, Banc Julian Hodge, Banc yr <a href="/w/index.php?title=HSBC&action=edit&redlink=1" class="new" title="HSBC (dim tudalen ar gael)">HSBC</a>, <a href="/wiki/ITV_Wales" class="mw-redirect" title="ITV Wales">ITV Wales</a>, <a href="/w/index.php?title=Ymddiriedolaeth_Elusennol_Joseph_Rowntree&action=edit&redlink=1" class="new" title="Ymddiriedolaeth Elusennol Joseph Rowntree (dim tudalen ar gael)">Ymddiriedolaeth Elusennol Joseph Rowntree</a>, <a href="/wiki/S4C" title="S4C">S4C</a>, <a href="/wiki/D%C5%B5r_Cymru" title="Dŵr Cymru">Dŵr Cymru</a> a <a href="/wiki/Prifysgol_Cymru" title="Prifysgol Cymru">Prifysgol Cymru</a>. </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=Sefydliad_Materion_Cymreig&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=Sefydliad_Materion_Cymreig&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><a href="/wiki/Melin_drafod" title="Melin drafod">Melin drafod</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Cyfeiriadau">Cyfeiriadau</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sefydliad_Materion_Cymreig&veaction=edit&section=2" title="Golygu'r adran: Cyfeiriadau" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sefydliad_Materion_Cymreig&action=edit&section=2" title="Edit section's source code: Cyfeiriadau"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"> <a rel="nofollow" class="external text" href="http://www.iwa.org.uk/cy/hanes">Sefydliad Materion Cymreig - Hanes</a>. Sefydliad Materion Cymreig. Adalwyd ar 29 Mai 2016.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text">Sion Barry. <i><a rel="nofollow" class="external text" href="http://www.walesonline.co.uk/business/appointments/institute-welsh-affairs-appoints-auriol-11678825">The Institute of Welsh Affairs appoints Auriol Miller as its new director</a> </i> , WalesOnline, 29 Gorffennaf 2016.  Cyrchwyd ar 19 Gorffennaf 2016. </span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Dolenni_allanol">Dolenni allanol</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sefydliad_Materion_Cymreig&veaction=edit&section=3" title="Golygu'r adran: Dolenni allanol" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sefydliad_Materion_Cymreig&action=edit&section=3" title="Edit section's source code: Dolenni allanol"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span style="font-size:0.95em; font-weight:bold; color: var(--color-progressive--active, #233566);">(Saesneg)</span> <a rel="nofollow" class="external text" href="https://www.iwa.wales/">Sefydliad Materion Cymreig</a></li></ul> <div style="clear: both; background-color: #f9f9f9; border: 1px solid #aaa; padding: 5px; padding-left: 10px; text-align: left; font-size: 90%; margin-top: 1em;"><span typeof="mw:File"><a href="/wiki/Delwedd:Flag_of_Wales.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/40px-Flag_of_Wales.svg.png" decoding="async" width="40" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/60px-Flag_of_Wales.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Flag_of_Wales.svg/80px-Flag_of_Wales.svg.png 2x" data-file-width="800" data-file-height="480" /></a></span> <i><a href="/wiki/Wicipedia:Eginyn" title="Wicipedia:Eginyn">Eginyn</a> erthygl sydd uchod am <b><a href="/wiki/Cymru" title="Cymru">Gymru</a></b>. 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