2013–14 Welsh Football League Division One

Welsh Football League Division One
This league known as the Nathanielcars.co.uk Welsh League Division One for sponsorship reasons, is a football league in Wales. This is the top division of football in South Wales and the second tier of the Welsh Football League.

The reigning champions are West End. However, they were not promoted to Welsh Premier League as they did not meet the necessary ground criteria. 

Pen-y-Bont was formed in 2013 following the merger of Bridgend Town F.C. and Bryntirion Athletic F.C.

Promotion and relegation
Teams promoted from 2012–13 Welsh Football League Division Two
 * Goytre - Champions
 * Aberbargoed Buds - 2nd Position
 * Caerau (Ely) - 3rd Position

Teams relegated from 2012–13 Welsh Premier League
 * None