Af
- Afan
- Afan River
- Afon Aeron
- Afon Afan
- Afon Aled
- Afon Alwen
- Afon Artro
- Afon Banwy
- Afon Bran
- Afon Cefni
- Afon Ceirw
- Afon Claerwen
- Afon Cledwen
- Afon Clywedog
- Afon Cothi
- Afon Cych
- Afon Cynin
| - Afon Cynon
- Afon Cywyn
- Afon Dewi Fawr
- Afon Dulas
- Afon Dwyryd
- Afon Dyfi
- Afon Dysynni
- Afon Eden
- Afon Eirth
- Afon Elai
- Afon Elan
- Afon Gain
- Afon Glaslyn
- Afon Gronw
- Afon Gwili
- Afon Gwy
- Afon Gwydderig
| - Afon Leri
- Afon Lledr
- Afon Lliw
- Afon Lliw
- Afon Llugwy
- Afon Llynfi
- Afon Lwyd
- Afon Machno
- Afon Mawddach
- Afon Mellte
- Afon Ogwen
- Afon Prysor
- Afon Pyrddin
- Afon Rhaiadr
- Afon Rheidol
- Afon Rhymni
- Afon Sawdde
| - Afon Seiont
- Afon Taf
- Afon Taf
- Afon Tanat
- Afon Teifi
- Afon Tryweryn
- Afon Twrch
- Afon Twrch
- Afon Twrch
- Afon Twymyn
- Afon Tywi
- Afon Vyrnwy
- Afon Wen
- Afon Wen Junction
- Afon Wnion
- Afon Wyre
- Afon Ystwyth
- Afton Water
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