Welsh: Gorllewin Morgannwg
West Glamorgan shown within Wales as a preserved county
|- 2003||820 km²
|- 2007||365,500 (est; 2003 borders)
|- Succeeded by||Swansea
Neath Port Talbot
Preserved county of West Glamorgan
|Status||Non-metropolitan county (1974–1996) Preserved county (1996–)|
|Government||West Glamorgan County Council|
Coat of arms of West Glamorgan County Council
|- Type||Non-metropolitan districts|
|- Units||1. Swansea
2. Lliw Valley
4. Port Talbot
West Glamorgan was created on 1 April 1974, by the Local Government Act 1972 from the county borough of Swansea, the municipal boroughs of Neath and Port Talbot, the urban districts of Glyncorrwg and Llwchwr, Gower Rural District, Pontardawe Rural District, and all of Neath Rural District except the parish of Rhigos. From 1982, the main council offices were located in County Hall, Swansea.
West Glamorgan had four districts, as follows:
- Swansea – Swansea CB and Gower RD
- Lliw Valley – Llwchwr and Pontardawe RD
- Neath – Neath and Neath RD
- Port Talbot – Port Talbot and Glyncorrwg
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. Lliw Valley was partitioned between the two authorities. A West Glamorgan preserved county was created for the limited functions of Lieutenancy and High Shrievalty.
- 2007 population estimate, calculated using 2003 borders for Swansea and Neath Port Talbot. Source: "Table 10: Mid-2006 to Mid-2007 Population Estimates, Components of population change for local authorities in the United Kingdom". Office for National Statistics. Retrieved 2010-09-11.