Aff (river)
# Aff (river)

The Aff (French pronunciation: ​; Breton: Av) is a river in Brittany, western France. It is a 66-kilometre (41 mi) long tributary of the river Oust. It is canalized for 7 kilometres (4.3 mi) between Glénac (its confluence with the Oust) and La Gacilly.

