The
River Gwaun (
Welsh:
Afon Gwaun, "
Gwaun" meaning 'marsh, moor') is a
river in
Pembrokeshire,
West Wales, which flows principally westwards, through the hamlet of
Cwm Gwaun, draining to the sea into Fishguard Bay at
Fishguard (Welsh:
Abergwaun - 'mouth of the Gwaun').