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A4221 shield
Route information
Length3 mi (4.8 km)
Major junctions
Northwest endAbercraf
Major intersections A4067
Southeast endBanwen
CountryUnited Kingdom
Constituent countryWales
Road network

The A4221 is an A road which links Banwen with Abercraf in Wales.

The roads begins just south of Abercraf at the junction with the A4067. It then heads eastwards through Caehopkin and then bypasses Coelbren. It joins the A4109 just west of Banwen.

Coordinates: 51°47′32″N 3°40′59″W / 51.79209°N 3.68295°W / 51.79209; -3.68295