West Glamorgan (Welsh: Gorllewin Morgannwg) is a former administrative county in South Wales.

West Glamorgan had four districts, as follows: Following the Local Government (Wales) Act 1994, West Glamorgan and its component districts were abolished on 1 April 1996, the area being divided into the two unitary authorities of Swansea and Neath and Port Talbot (later changed to "Neath Port Talbot").

A West Glamorgan preserved county was created for the limited functions of Lieutenancy and High Shrievalty.

The crest is a Welsh Dragon holding a Tudor rose in its forepaws, rising above four gold cogwheels.

The supporters are an osprey and a heron, both with a fish in their beaks, and wearing a chain round their necks.