Cefn

Cefn may refer to:

Places

 * Cefn (community), in Wrexham county borough, Wales
 * Cefn Mawr, a large village in the community of Cefn
 * Cefn Cribwr, a village in Bridgend county borough, Wales
 * Cefn Fault, a geological fault in Wales
 * Cefn Glas, an area of Bridgend, Wales
 * Cefnllys or Cefn Llys, an abandoned ghost village, formerly a medieval castle town and borough, near Llandrindod Wells, Powys
 * Cefnllys Castle

Sport

 * Cefn Druids A.F.C., a football club based in Cefn Mawr, playing in the Cymru Alliance.
 * F.C. Cefn, a football club based in Cefn Mawr, playing in the Welsh National League (Wrexham Area) Premier Division

Other uses

 * Cefn quarry, a slate quarry near Cilgerran, Wales