Gwynfi is an electoral ward of Neath Port Talbot county borough, Wales.

Gwynfi is part of the community of Glyncorrwg and the parliamentary constituency of Aberavon.

Gwynfi is bounded by the wards of: Glyncorrwg to the northwest; Treherbert of Rhondda Cynon Taff to the east; Blaengarw of Bridgend county borough to the south; and Cymmer to the west.

Jane Jones was returned to the seat, having previously been councillor until May 2012.

The swing in votes was attributed to a threat from the Labour controlled council to close Cymer Afan School.