Abergwili is a village and community in Carmarthenshire, Wales, near the confluence of the rivers Towy and Gwili, close to the town of Carmarthen. It is also an electoral ward. Named after the village of Abergwili, the community includes the settlements of Peniel, Llanfihangel-uwch-Gwili and White Mill. The grounds of the former Bishop's Palace are listed on the Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales.

The River Towy is one of the longest rivers flowing entirely within Wales. Its total length is 120 km (75 mi). It is noted for its sea trout and salmon fishing.