Saint Afan

Afan of Builth
St Afan's Church in Llanafan Fawr
Bishop
Born	5th or 6th century
Died	6th century Llanafan Fawr
Canonized	Pre-Congregation
Major shrine	Llanafan Fawr Llanafan
Feast	16 or 17 November (lapsed)
Patronage	Llanafan Fawr Llanafan

Saint Afan of Builth (Welsh: Sant Afan Buellt; Latin: Avanus) was an early 6th-century Welsh bishop, martyr, and saint. His feast day is generally placed on 17 November, although the Demetian Calendar formerly used in southern Wales placed it on the 16th; it is no longer observed by either the Anglican or Catholic church in Wales.

Afan as a man's name in Wales is probably a loan from the Latin Amandus. In Welsh, he is sometimes known as Esgob Afan ("Bishop Afan") from his title and as Afan Buellt or Buallt from his diocese around Builth in Brycheiniog.

Saint Afan was the son of Cedig ap Ceredig, son of Cunedda Wledig, king of Gwynedd. Through this line, he was a cousin of Saint David, patron saint of Wales. Afan's mother is variously given as Dwywai, Degfed ("Tenth"), Tegfedd, or Tegwedd, all said to have been daughters of Tegid the Bald, a lord of Penllyn in Meirionnydd who was the husband of the sorceress Ceridwen in Welsh legend.