Cefn may refer to:

Places

Cefn (community) is a community in Wrexham County Borough, Wales. The community of Cefn includes the villages of Cefn Mawr, Cefn Bychan, Acrefair, Penybryn, Newbridge, Plas Madoc and Rhosymedre and is situated on the northern slopes of the Dee Valley. A ...

, in Wrexham county borough, Wales **

Cefn Mawr Cefn Mawr (; ) is a village in the Community (Wales), community of Cefn (community), Cefn within Wrexham County Borough, Wales. Its name translates as "big ridge".Mills, D. ''A Dictionary of British Place Names'', OUP, p.104 The population in ...

, a large village in the community of Cefn *

Cefn Cribwr Cefn Cribwr is a village and community in Bridgend County Borough in south Wales. The village is located about 5 miles (8 km) from the centre of Bridgend town, and in-between Bridgend and Pyle. Description The village is situated on a rid ...

, a village in Bridgend county borough, Wales * Cefn Fault, a geological fault in Wales * Cefn Glas, an area of Bridgend, Wales *

Cefnllys Cefnllys is an abandoned ghost village, formerly a medieval castle town and borough, near Llandrindod Wells in Radnorshire (now part of Powys), Wales. The settlement was founded during the 13th century by the Mortimer family in order to streng ...

or Cefn Llys, an abandoned ghost village, formerly a medieval castle town and borough, near Llandrindod Wells, Powys **

Cefnllys Castle Cefnllys Castle (, ) was a medieval spur castle in Radnorshire (now part of Powys), Wales. Two successive masonry castles were built on a ridge above the River Ithon known as Castle Bank () in the thirteenth century, replacing a wooden motte-an ...

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 {{disambig, geo