Afon Marlais, Pembrokeshire

Afon Marlais is a right-bank tributary of the River Taf in Pembrokeshire, West Wales. It flows through the Vale of Lampeter to join the Taf just west of Whitland. Its length is approximately 10 kilometres (6.2 mi). The name derives from the Welsh 'marw glais' and signifies a 'stagnant stream'.

Flows through: United Kingdom.

River data from Wikidata (CC0); lengths normalised to a common unit.