Defnyddiwr:Adda'r Yw/cyfeirlyfrau/Gwyddoniadur Cymru
Rhestr erthyglau Gwyddoniadur Cymru yr Academi Gymreig, er mwyn sicrhau bod Wicipedia'n gystal.
| Erthygl Gwyddoniadur Cymru | Erthygl Wicipedia | Erthygl Wikipedia (os oes angen) |
Is-gofnodion |
|---|---|---|---|
| A oes heddwch? | A oes heddwch? | ||
| A470 | A470 | ||
| A5 | A5 | ||
| A55 | A55 | ||
| Aaron, Richard I[thamar] (1901–1987) | Richard Ithamar Aaron | ||
| Abaty Cwm-hir | Abaty Cwm-hir (cymuned) | ||
| Abenbury | Abenbury | ||
| Aber[gwyngregyn] | Abergwyngregyn | ||
| Aberaeron | Aberaeron | ||
| Aberafan | Aberafan | Aberafan (cymuned), Sandfields Dwyreiniol, Sandfields Gorllewinol | |
| Aberaman | Aberaman | ||
| Aber-carn | Abercarn | ||
| Aberconwy | Aberconwy (dosbarth), Aberconwy (etholaeth Cynulliad) | District of Aberconwy | |
| Abercynon | Abercynon | ||
| Aberchwiler | Aberchwiler | ||
| Aberdâr | Aberdâr | ||
| Aberdaron | Aberdaron | ||
| Aberdaugleddau neu Milffwrdd | Aberdaugleddau | ||
| Aberdaugleddau, Dyfrffordd | Dyfrffordd Aberdaugleddau | ||
| Aberdyfi | Aberdyfi | ||
| Aberedw | Aberedw | ||
| Aber-fan, Trychineb | Trychineb Aberfan | ||
| Aberffraw | Aberffraw | ||
| Abergele | Abergele | ||
| Abergele, Damwain Drên | Damwain drên Abergele | ||
| 'Abergele, Merthyron' | Merthyron Abergele | ||
| Abergwaun ac Wdig | Abergwaun, Wdig – angen Abergwaun ac Wdig (cymuned)? | ||
| Abergwili | Abergwili | ||
| Aberhafesb | Aberhafesb | ||
| Aberhonddu | Aberhonddu | ||
| Abermaw neu Bermo | Abermaw | ||
| Aber-miwl, Damwain Drên | Damwain drên Aber-miwl | Abermule train collision | |
| Aber-nant | |||
| Aberpennar | |||
| Aber-porth | |||
| Aberriw | |||
| Abersychan | |||
| Abertawe | Birchgrove, Bôn-y-maen, Y Castell, Cilâ, Y Cocyd, Cwmbwrla, Glandŵr, Llansamlet, Y Mwmbwls, Mynydd-bach, Penderi, St Thomas, Sgeti, Townhill, Treforys, Uplands | ||
| Abertawe, Sir | |||
| Aberteifi | |||
| Abertyleri | |||
| Aberystwyth | |||
| Ablett, Noah (1883–1935) | |||
| Above Us the Earth | |||
| Abraham, William (Mabon; 1842–1922) | |||
| Academi Frenhinol Gymreig, Yr | |||
| Academi Gymreig, Yr | |||
| Academïau Anghydffurfiol | |||
| Acland, Arthur [Herbet Dyke] (1847–1926) | |||
| Achosion Saesneg, Yr | |||
| Achyddiaeth | |||
| Adam, David (1845–1923) | |||
| Adar | Aderyn Drycin Manaw, Barcud Coch, Brân Goesgoch, Bronwen y Dŵr, Cigfran, Hugan, Tylluanod | ||
| Adar Rhiannon | |||
| Adeiladu llongau | |||
| Adfer | |||
| Adran Gymreig y Bwrdd Addysg | |||
| Adran Gymreig y Weinyddiaeth Amaeth a Physgodfeydd | |||
| Adroddiad Arglwydd Aberdare | |||
| Adda o Frynbuga (1352?–1430) | |||
| Addysg | Yr Oesoedd Canol, Yr unfed ganrif ar bymtheg hyd y ddeunawfed ganrif, Y bedwaredd ganrif ar bymtheg, Yr ugeinfed ganrif, Y ddarpariaeth bresennol | ||
| Aeron, Afon | |||
| Afan | |||
| Afancod neu Llostlydanod | |||
| Afonydd | Fflora a ffawna afonydd Cymru, Defnydd pobl o afonydd a'i ganlyniadau | ||
| Affricaniaid | |||
| Agnostigiaid ac Anffyddwyr | |||
| Anghydffurfiaeth ac Ymneilltuaeth | |||
| Ail Ryfel Byd, Yr | |||
| Alban a Chymru, Yr | |||
| Albion, Trychineb Glofa'r | |||
| Alert, The | |||
| Allchurch, Ivor [John] (1929–97) | |||
| Allen, Norman Percy (1903–72) | |||
| Almanaciau | |||
| Alun a Glannau Dyfrdwy | |||
| Allteuryn | |||
| Amaethyddiaeth | |||
| Ambrosius (Emrys Wledig; fl. 5g.) | |||
| Amerik (Ap Meurig neu A'Meryke), Richard (fl. 1498) | |||
| Amffibiaid ac Ymlusgiaid | |||
| Amgoed | |||
| Amgueddfa [Genedlaethol] Cymru | |||
| Amlwch | |||
| Amroth | |||
| Andrews, Elizabeth (1882–1960) | |||
| Andrews, Solomon (1835–1908) | |||
| Aneirin neu Neirin (fl. ail hanner y 6g.) | |||
| Angle | |||
| Anglicaniaid | |||
| Anhuniog | |||
| Anian (Einion; m. 1306?) | |||
| Anian II (fl. 1250au–93) | |||
| Annibynwyr | |||
| Annwfn neu Annwn | |||
| Anterliwt | |||
| Anthony, Jack (John Randolph Anthony; 1890–1954) | |||
| Antiffonari Pen-pont | |||
| Anwyl, Edward (1866–1914) | |||
| Apperley, Charles James (Nimrod; 1779–1843) | |||
| 'Ar Hyd y Nos' | |||
| Aran Fawddwy ac Aran Benllyn | |||
| Arberth | |||
| Archaeoleg a Hynafiaetheg | |||
| Archdderwyd | |||
| Ardaloedd datblygu | |||
| Ardudwy | |||
| Arennig Fawr ac Arennig Fach | |||
| Arfon | |||
| Argoed, Caerffili | |||
| Argoed, Sir y Fflint | |||
| Argraffu a chyhoeddi | Argraffu a chyhoeddi yn Gymraeg, Argraffu a chyhoeddi yn Saesneg | ||
| Ariaeth | Ariadaeth | ||
| Arian bath a thocins | |||
| Arianrhod | Arianrhod | ||
| Arlunydd Naïf Aberystwyth (fl. 1840–50) | Arlunydd Naïf Aberystwyth | ||
| Arllechwedd | Arllechwedd | ||
| Arminiaeth | Arminiaeth | ||
| Arnold, Matthew (1822–88) | Matthew Arnold | ||
| Arolygiaeth Ei Mawrhydi dros Addysg (HMI) | |||
| Artistiaid ar ffo | |||
| Arthog | Arthog | ||
| Arthur | Y Brenin Arthur | ||
| Arwystli | |||
| Ashby, A[rthur] W[ilfred] (1886–1953) | |||
| Ashley, Laura (1925–95) | |||
| Ashton, Charles ( 1848–99) | |||
| Asser (m. 909) | |||
| Assheton Smith, Teulu | |||
| Association of Welsh Clergy in the West Riding of the County of York, The | |||
| Astley, Dai (David John Astley; 1909–89) | |||
| Astronomeg | |||
| Atkin, James Richard (yr Arglwydd Atkin o Aberdyfi; 1867–1944) | |||
| Athletau a Mabolgampau | |||
| Athrofa Addysg Uwch Abertawe | |||
| Athrofa Addysg Uwch Gogledd-Ddwyrain Cymru (NEWI) | Prifysgol Glyndŵr | ||
| Athrofa Prifysgol Cymru, Caerdydd (UWIC) | Prifysgol Fetropolitan Caerdydd | ||
| Athroniaeth | |||
| Aubrey, William (c. 1529–95) | |||
| Audley, Teulu | |||
| Aur | |||
| Awdl | |||
| Awdurdod Datblygu Cymru | |||
| Awstralia a Chymru | Awstraliaid Cymreig | ||
| Bacon, Anthony (1718–86) | |||
| Badau achub | |||
| Badminton | |||
| Bae Cinmel a Thywyn | |||
| Bae Colwyn | |||
| Baedd Gwyllt, Y | |||
| Bagillt | |||
| Baglan | Baglan (cymuned), Bae Baglan | ||
| Bangladeshiaid | Cymry Bangladeshaidd | ||
| Bailey, Teulu | |||
| Baker, David (Y Tad Augustine Baker; 1575–1641) | |||
| Baker, Stanley (1928–76) | Stanley Baker | ||
| Bala, Y | |||
| Baledi | |||
| Banc Cymru | |||
| Banc Gogledd a De Cymru | Banc Gogledd a Deheudir Cymru | ||
| Bancio a Banciau | |||
| Bancroft, W[illiam] J[ohn] (1871–1959) | |||
| Band Cory | |||
| Band Cyfarthfa | |||
| Bandiau Jazz neu Bandiau Gaswca | |||
| Bandiau Pres | |||
| Bando | Bando | ||
| Bangor | Bangor | ||
| Bangor Is-coed | Bangor-is-y-coed | ||
| Bankes, Syr John [Eldon] (1854–1946) | |||
| Bannau Brycheiniog | Bannau Brycheiniog, Parc Cenedlaethol Bannau Brycheiniog | ||
| Banw | |||
| Bara Brith | Bara brith | ||
| Bara Lawr | |||
| Bardd Cocos | |||
| Bardd Gwlad | |||
| Bardd Teulu | |||
| Bargod | |||
| Barker, Teulu | |||
| Barlow, William (m. 1569) | |||
| Barnes, Walley (1920–75) | |||
| Barri, Y | |||
| Barrington, Daines (1727–1800) | |||
| Batchelor, John (1820–83) | |||
| Bates, Audrey [Glenys] (1924–2001) | |||
| Bathdy Brenhinol, Y | |||
| Bausley a Chrugion | |||
| Baxter, William (1650–1723) | |||
| Bayly, Lewis (m. 1631) | |||
| Beale, Anne (1815–1900) | |||
| Beasley, Trefor (1918–94) | |||
| Beauchamp, Teulu | |||
| Bebb, Dewi [Iorwerth Ellis] (1938–96) | |||
| Bebb, W[illiam] Ambrose (1894–1955) | |||
| Beca | en:Beca | ||
| Bedford, Francis (1816–94) | |||
| Bedwas, Tretomas a Machen | |||
| Bedwellte | |||
| Bedwen Haf | |||
| Bedyddwyr | |||
| Bedyddwyr Albanaidd | |||
| Beddgelert | |||
| Beibl, Y | |||
| Beirdd y Tywysogion | |||
| Beirdd yr Uchelwyr | |||
| Bek neu Beck, Thomas (m. 1293) | |||
| Bele'r Coed | |||
| Bell, David (1915–59) | |||
| Bell, [Harold] Idris (1879–1967) | |||
| Bendigeidfran fab Llŷr neu Brân | |||
| Benedictiaid | |||
| Bennet, Anna Maria (c. 1750–1808) | |||
| Bennet, Nicholas (1823–99) | |||
| Berfeddwlad, Y | |||
| Bernard (m. 1148) | |||
| Bernard de Neufmarché (m. c. 1125) | |||
| Berry, Teulu | |||
| Berry, R[obert] G[riffith] (1869–1945) | |||
| Berry, Ron (1920–97) | |||
| Bers, Gwaith Haearn Y | |||
| Berwyn, Mynyddoedd y | Y Berwyn | ||
| Betws | |||
| Betws Cedewain | |||
| Betws Garmon | |||
| Betws Gwerful Goch | |||
| Betws-y-coed | |||
| Betws-yn-Rhos | |||
| Bethesda | |||
| Beulah | |||
| Beuno (6g./7g.) | |||
| Bevan, Aneurin (1897–1960) | Aneurin Bevan | ||
| Bevan, Bridget (Madam Bevan; 1698–1779) | Bridget Bevan | ||
| 'Bevin Boys' | Bevin Boys | Bevin Boys | |
| Bevis (Bevans), John (1693–1771) | |||
| Beynon, [William John] Granville (1914–96) | |||
| Bigod, Teulu | |||
| Biliards a Snwcer | |||
| 'Billy Playfair' | |||
| Biwmares | Biwmares | ||
| Blackwell, John (Alun; 1797–1840) | John Blackwell (Alun) | ||
| Blaenafon | |||
| Blaenau Gwent | |||
| Blaendulais | |||
| Blaen-gwrach | |||
| Blaenhonddan | |||
| Blaenllynfi | |||
| Blaenrheidol | |||
| Blawta a Blonega | |||
| Bleddyn ap Cynfyn (m. 1075) | |||
| Bleddyn Fardd (fl. 1240–90) | |||
| Blegywryd (fl. 930–50) | |||
| Bleiddiaid | |||
| Blodeuwedd | |||
| Blue Scar (1949) | Blue Scar | Blue Scar | |
| Bocsio | |||
| Boddington, Lewis (1907–94) | |||
| Bodedern | |||
| Bodelwyddan | |||
| Bodfari | |||
| Bodffordd | |||
| Bodorgan | |||
| Bohun, Teulu | |||
| Bonaparte, Louis-Lucien (1813–91) | |||
| Boncath | |||
| Boneddigion a Landlordiaid | |||
| Bont-faen a Llanfleiddan, Y | |||
| Bontnewydd, Y | |||
| Boon, Ronnie (Ronald Winston Boon; 1909–98) | |||
| Borrow, George (1803–81) | |||
| Borth, Y | |||
| Bosworth, Brwydr | |||
| Botwnnog | |||
| Bowen, David [Lloyd] (1928–90) | |||
| Bowen, Edward [George] (1911–91) | |||
| Bowen, E[mrys] G[eorge] (1900–83) | |||
| Bowen, Euros (1904–88) | |||
| Bowlio | |||
| Brace, William (1865–1947) | |||
| Brad y Cyllyll Hirion | |||
| Brad y Llyfrau Gleision | |||
| Bradney, J[oseph] A[lfred] (1859–1933) | |||
| Brangwyn, Frank (1867–1956) | |||
| Branwen ferch Llŷr | |||
| Brech wen | |||
| Brenhinoedd a Thywysogion | |||
| Brenhinoedd Lloegr a'u perthynas â Chymru | |||
| Breos (Brewys), Teulu | |||
| Breudeth | |||
| Brewer-Spinks, Anghydfod | |||
| Brigstocke, Teulu | |||
| Brithdir a Llanfachreth | |||
| Bro Garmon | |||
| Bro Machno | |||
| Bro Morgannwg | |||
| Brodyr Cardod | |||
| Bronington | |||
| Bronllys | |||
| Bronwydd | |||
| Bruce, Teulu | |||
| Brunel, Isambard Kingdom (1806–59) | |||
| Brunt, David (1886–1965) | |||
| Brut, Walter ( Gwallter Brut(e); fl. 1390–1402) | |||
| Brut y Tywysogion | |||
| Brute, Teulu | |||
| Brutus | |||
| Brwmffild ac Iâl | |||
| Brychan (5g.) | |||
| Brychdyn | |||
| Brychdyn a Bretton | |||
| Brycheiniog, Arglwyddiaeth | |||
| Brycheiniog, Teyrnas | |||
| Brymbo | |||
| Bryn, Castell-nedd Port Talbot | |||
| Bryn Derwin, Brwydr | |||
| Brynbuga | |||
| Bryn-crug | |||
| Bryneglwys | |||
| Brynffordd | |||
| Bryngaerau | |||
| Bryngwran | |||
| Bryniau Casia | |||
| Bryniau Clwyd | |||
| Bryn-Jones, Delme (1935–2001) | |||
| Bryn-mawr | |||
| Buan | |||
| Buck, Samuel (1696–1779) a Nathaniel (fl. 1727–53) | |||
| Buddug (fl. 1g.) | Buddug (Boudica) | ||
| Buddugre, Swydd | |||
| Buellt neu Buallt | |||
| Bugeildy | |||
| 'Bugeilio'r Gwenith Gwyn' | |||
| Buildings of Wales, The | |||
| Bulkeley, Teulu | Bulkeley (teulu) | ||
| Bulkeley, Arthur (c. 1495–1553) | |||
| Burges, William (1821–81) | |||
| Burgess, Thomas (1756–1837) | |||
| Burgh, Hubert de (m. 1243) | |||
| Burton, Sir Benfro | |||
| Burton, Philip (1904–95) | |||
| Burton, Richard (Richard Walter Jenkins; 1925–84) | |||
| Bush, Percy [Frank] (1879–1958) | |||
| Butler, Eleanor (1745?–1829) a Ponsonby, Sarah (1755–1831) | Eleanor Butler a Sarah Ponsonby | ||
| Button, Thomas (c. 1575–1634) | |||
| Bwa Hir, Y | |||
| Bwcle | Bwcle | ||
| Bwrdeistrefi | |||
| Bwrdeistrefi Sirol | |||
| Bwrdd Adleoli Diwydiannol, Y | |||
| Bwrdd Canol Cymru | |||
| Bwrdd Datblygu Cymru Wledig | |||
| Bwrdd Glo Cenedlaethol, Y | Bwrdd Glo Cenedlaethol | ||
| Bwrdd Gwybodau Celtaidd Prifysgol Cymru | Y Bwrdd Gwybodau Celtaidd | ||
| Bwrdd Iechyd Cymru | |||
| Bwrdd yr Iaith Gymraeg | Bwrdd yr Iaith Gymraeg | ||
| Bwrdd Ysbytai Cymru | |||
| Bwyd a Diod | |||
| Byddin Rhyddid Cymru | Byddin Rhyddid Cymru | ||
| Bysiau | |||
| Bywgraffiadur Cymreig hyd 1940, Y | |||
| Cadair Idris | Cadair Idris | ||
| Cadfan (6g.) | |||
| Cadfarch | |||
| Cadi Haf | |||
| Cadog (5g. neu 6g.) | |||
| Cadw | |||
| Cadwaladr ap Cadwallon (m. 664/682) | |||
| Cadwallon ap Cadfan (m. 633) | |||
| Cadwgan (m. 1241) | |||
| Cadwgan ap Bleddyn (m. 1111) | |||
| Caeo | |||
| Caer, Brwydr | Brwydr Caer | ||
| Caerdydd, Cyn-ddosbarth | |||
| Caerdydd | Cymunedau: Adamsdown, Caerau, Y Castell, Cathays, Cyncoed, Yr Eglwys Newydd, Gabalfa, Glan'rafon, Grangetown/Trelluest, Hen Laneirwg, Llandaf, Llanisien, Llanrhymni, Llys-faen, Pen-twyn, Pen-tyrch, Plasnewydd, Pontprennau, Radur a Threforgan, Y Rhath, Rhiwbeina, Sain Ffagan, Y Sblot, Tongwynlais, Tre-biwt, Tredelerch, Treganna, Trelái, Trowbridge, Tyllgoed, Y Waun Ddyfal, Ystum Taf | ||
| Caereinion | |||
| Caerfyrddin, Cyn-ddosbarth | |||
| Caerfyrddin | |||
| Caerffili, Bwrdeistref sirol | |||
| Caerffili | Cymunedau: Caerffili, Y Fan, Penyrheol, Trecenydd ac Ene'rglyn | ||
| Caergrawnt a Chymru | |||
| Caergybi | Caergybi | ||
| Caerhun | Caerhun | ||
| Caeriw | |||
| Caerllion | |||
| Caernarfon | |||
| Caersŵs | Caersŵs | ||
| Caerwedros | |||
| Caer-went | |||
| Caerwys | |||
| Caesar, The | |||
| Caethwasiaeth | |||
| Cafflogion | Cafflogion | ||
| Cai, Brwydr | Brwydr Cai (Winwaed) | ||
| Calan, Y | Dydd Calan | ||
| Calan Gaeaf | Gŵyl Calan Gaeaf | ||
| Calan Mai | Calan Mai | ||
| Calchfaen | |||
| Caldicot, Sir Fynwy | |||
| Calennig | |||
| Calfiniaeth | |||
| Callaghan, [Leonard] James (1912–2005) | James Callaghan | ||
| Callice, John (fl. 16g.) | John Callice | ||
| 'Calon Lân' | Calon Lân | ||
| Cambria | Cambria (gair) | Cambria | |
| Cambrian Institute, The | The Cambrian Institute | ||
| Cambriol | Cambriol | ||
| Camden, William (1551–1623) | William Camden | ||
| Camlesi a dyfrffyrdd | Camlesi Cymru | ||
| Campbell, Teulu (ieirll Cawdor) | Clan Campbell, Iarll Cawdor | Clan Campbell, Earl Cawdor | |
| Camros | Camros | ||
| Canolfan Materion Rhyngwladol Cymru | Canolfan Materion Rhyngwladol Cymru | Welsh Centre for International Affairs | |
| Canolfan Uwchefrydiau Cymreig a Cheltaidd Prifysgol Cymru | Canolfan Uwchefrydiau Cymreig a Cheltaidd Prifysgol Cymru | ||
| Canolfan y Dechnoleg Amgen | Canolfan y Dechnoleg Amgen | ||
| Canolfannau milwrol | Canolfannau milwrol yng Nghymru | Category:Military installations in Wales | |
| Canoniaid Awgwstinaidd | Canoniaid Awgwstinaidd yng Nghymru | ||
| Cantref | Cantref, Cantrefi a chymydau Cymru | ||
| Cantref Bychan | |||
| Cantref Gwarthaf | |||
| Cantref Mawr (Brycheiniog) | |||
| Cantref Mawr (Ystrad Tywi) | |||
| Cantref Selyf | |||
| Cantre'r Gwaelod | |||
| Canu Gŵyl Fair | |||
| Canu llofft stabl | |||
| Canu penillion | |||
| Canu plygain | |||
| Capel Curig | |||
| Caradog (fl. 1g.) | |||
| Caradog o Lancarfan (fl. 1135) | |||
| Carchardai | |||
| Caribïaid | |||
| Carne, Edward (c. 1490–1561) | |||
| Carneddau, Y | |||
| Carno | |||
| Carnwyllion | |||
| Carolau haf | |||
| Carreghwyfa | |||
| Carter, J[ohn] C[oates] (1859–1927) | |||
| Cartwright, Frederick (1907–98) | |||
| Caru a phriodi | |||
| Caru yn y gwely | |||
| Cas-blaidd | |||
| Caseg Fedi | |||
| Cas-gwent | |||
| Cas-lai | |||
| Cas-mael | |||
| Casnewydd | Cymunedau: Alway, Allt-yr-ynn, Beechwood, Betws, Y Gaer, Liswerry, Malpas, Parc Tredegyr, Pillgwenlli, Ringland, Sain Silian, Shaftesbury, Stow Hill, Victoria | ||
| Casnewydd, Sir a chyn-ddosbarth | |||
| Casnewydd, Gwrthryfel | |||
| Castell Caereinion | |||
| Castell Gwalchmai | |||
| Castellmartin | |||
| Castell-nedd, Etholaeth a chyn-ddosbarth | |||
| Castell-nedd | |||
| Castell-nedd Port Talbot | |||
| Castellnewydd ar Ogwr, Y | |||
| Castellnewydd Emlyn | |||
| Cas-wis | |||
| Catrawd Frenhinol Cymru | |||
| Catrawd Gymreig | |||
| Catrin o Ferain (1534/5–91) | |||
| Catheiniog | |||
| Cathod | |||
| Catholigion Rhufeinig | |||
| Cau'r tafarnau ar y Sul | |||
| Cau tiroedd | |||
| Cave, Jane (c. 1757–1813) | |||
| Cawl | |||
| Caws | |||
| Caws ar dost neu Caws pobi | |||
| CBI Cymru | |||
| Cecil, Teulu | |||
| Cedewain | |||
| Cedweli | |||
| Cefn | |||
| Cefn Fforest | |||
| Cefn Meiriadog | |||
| Cefncribwr | |||
| Ceffyl pren, Y | |||
| Ceffylau, merlod a chobiau | Y Ferlen Fynydd Gymreig (Adran A), Y Ferlen Gymreig (Adran B), Merlen Gymreig o Deip y Cob (Adran C), Y Cob Cymreig (Adran D) | ||
| Cegidfa | |||
| Cei Connah | |||
| Ceilys | |||
| Ceinewydd | |||
| Ceiniogau Môn | |||
| Ceinmeirch | |||
| Ceir a cherbydau, Cynhyrchu | |||
| Ceirch | |||
| Ceiriog Uchaf | |||
| Ceirw | |||
| Celtiaid | |||
| Cemais (Dyfed) | |||
| Cemais (Môn) | |||
| Cemeg | |||
| Cemegion | |||
| Cenarth | |||
| Cendl | |||
| Cenedlaetholdeb | |||
| Cenedligrwydd | |||
| Cenhadon | |||
| Cenhinen | |||
| Cenhinen Bedr | |||
| Cerddordfa Genedlaethol Gymreig y BBC | |||
| Cerddorfa Genedlaethol Ieuenctid Cymru | |||
| Cerddoriaeth | Cerddoriaeth draddodiadol, Emynau a cherddoriaeth y cysegr, Cerddoriaeth gorawl seciwlar, Addysg gerddorol, Cerddoriaeth gelfyddydol, Cerddoriaeth boblogaidd, Jazz | ||
| Ceredigion, Sir | |||
| Ceredigion, Teyrnas | |||
| Cerfio coed | |||
| Cerflunio | |||
| Ceri, Sir Drefaldwyn | |||
| Ceri, Cwmwd | |||
| Cernyw a Chymru | |||
| Cerrigydrudion | |||
| Ceulan-a-maesmor | |||
| Cewri | |||
| Chamberlain, Brenda (1912–71) | |||
| Chamberlain, Joseph (1836–1914) | |||
| Chambers, J[ohn] G[raham] (1843–83) | |||
| Chapman, George (1908–93) | |||
| Chappell, Edgar Leyshon (1879–1949) | |||
| Charles, David (1762–1834) | |||
| Charles, Geoff[rey] (1909–2002) | |||
| Charles, [William] John (1931–2004) | |||
| Charles, Thomas (1755–1814) | |||
| Charlton, Evan (1904–84) | |||
| Cheetham, Arthur (1864–1936) | |||
| Chineaid | |||
| Churchill, Winston [Spencer] (1874–1965) | |||
| Cibwr | |||
| Cilâ Uchaf | |||
| Cilcain | |||
| Cilgerran | |||
| Cilgeti | |||
| Ciliau Aeron | |||
| Cilie, Teulu'r (Bois y Cilie) | |||
| Cilmeri | |||
| Cilybebyll | |||
| Cil-y-cwm | |||
| Cilymaenllwyd | |||
| Citadel, The (1938) | |||
| Clare, Teulu | |||
| Clark, G[eorge] T[homas] (1809–98) | |||
| Clas | |||
| Clas-ar-wy, Y | |||
| Clawdd Offa | |||
| Clawdd Wat | |||
| Clay, J[ohn] C[harles] (1898–1973) | |||
| Cleddau, Afonydd | |||
| Cleddyfa | |||
| Cleirwy | |||
| Clêr | |||
| Clocaenog | |||
| Clociau | |||
| Clun, Y, a Melin-cwrt | |||
| Clunderwen | |||
| Clwyd, Afon | |||
| Clwyd | |||
| 'Clychau Aberdyfi' | |||
| Clydach | |||
| Clydau | |||
| Clynnog | |||
| Clynnog, Morys (1525–1580/1) | |||
| Cnapan | |||
| CND Cymru | |||
| Cnicht, Moelwyn Mawr a Moelwyn Bach | |||
| Cnydau tir âr | |||
| Cochrane, Archibald Leman (1909–88) | |||
| Côd Penyd, Y (1401 a 1402) | |||
| Codi pwysau | |||
| Coedcernyw | |||
| Coed-duon, Y | |||
| Coed-ffranc | |||
| Coed-llai | |||
| Coed-poeth | |||
| Coedwigaeth | |||
| Coetio | |||
| Coets fawr | |||
| Coety Uchaf | |||
| Cofebau Cristnogol cynnar | |||
| Cofebau rhyfel | |||
| Coffin, Walter (1784–1867) | |||
| Cofrestrfa Tir Ddosbarthol Cymru | |||
| Colegau Cerdd a Drama Brenhinol Cymru | |||
| Coleg Harlech | |||
| Coleg Llafur Canolog, Y | |||
| Coleg Meddygaeth, Bioleg, Gwyddorau Iechydd a Bywyd Cymru | |||
| Coleg Normal, Y | |||
| Coleg y Drindod | |||
| Colera neu Y Geri Marwol | |||
| Coles, Bryan [Randall] (1926–97) | |||
| Colion | |||
| Colomendai | |||
| Colwyn | |||
| Comin Greenham | |||
| Comisiwn Brenhinol Henebion Cymru | |||
| Comisiwn Coedwigaeth, Y | |||
| Comisiwn Gweinyddiaeth Leol yng Nghymru, Y | |||
| Comisiwn Kilbrandon | |||
| Condry, William (Moreton) (1918–98) | |||
| Conwy, Afon | |||
| Conwy, Bwrdeistref sirol | |||
| Conwy, Tref | |||
| Conybeare, W[illiam] D[aniel] (1787–1857) | |||
| Cook, A[rthur] J[ames] (1883–1931) | |||
| Coombe Tennant, Winifred Margaret (Mam o Nedd; 1874–1956) | |||
| Coombes, B[ert] L[ewis] (1894–1974) | |||
| Cooper, Tommy (1922–84) | |||
| Copr, sinc a nicel | |||
| Corau meibion |