Pob tudalen â rhagddodiad
- A3 paper
- A4 paper
- A band
- A bands
- Abendessen
- Aberhonddu
- Abertawe
- Aberteifi
- Abyssinians
- Actau'r Apostolion
- Adam's apple
- Adam's apples
- Adda
- Adda ac Efa
- Adriatic Sea
- Adverb
- Adverbium
- Aegeaidd
- Aegean
- Aegean Sea
- Aelod Seneddol
- Aelod o'r Senedd
- Aelodau Seneddol
- Aelodau o'r Senedd
- Affrica
- Affricaneg
- Afghanistan
- Africa
- Afrikaans
- Aibreán
- Airija
- Alankomaat
- Alba
- Albaneg
- Albania
- Albaniaidd
- Albanian
- Alemania
- Alffa
- Algeria
- Almaeneg
- Almaenes
- Almaenwr
- Almaenwyr
- Amcan 1
- America
- American
- Americanaidd
- Americas
- Amos
- An Bhreatain Bheag
- An Bhreatain Mhór
- Ancient Greek
- Ancient Greeks
- Andora
- Andorra
- Anglia
- Anglija
- Angola
- Antonym
- Aoine
- Apfel
- April
- Arabeg
- Arabia Saudita
- Arabian Sea
- Arabic
- Arabic numeral
- Arabic numerals
- Archifio trafodaethau'r Dafarn
- Arctic Ocean
- Ardal 51
- Area 51
- Argelia
- Argentina
- Argentine Republic
- Argentyna
- Argjentina
- Armeneg
- Armenia
- Arxentina
- Asia
- Ateb Terfynol
- Athen
- Atlantic Ocean
- Auge
- August
- Aussprache
- Australia
- Austria
- Austrija
- Austro-Hungarian
- Automobil
- Awst
- Awstralia
- Awstria
- Awstro-Hwngaraidd
- Azerbaiyán
- Azerbejdżan