Afon Annell (River Annell) is a small river in Carmarthenshire, Wales.
It is a tributary of the Afon Cothi.
Some of the waters of the Annell were previously diverted via aqueduct to serve the Roman gold mine at Dolaucothi.
Coordinates: 52°00′09″N 3°58′30″W / 52.00250°N 3.97500°W