| Official Name: | Gwaun-Cae-Gurwen |
| Unitary Wales: | Neath Port Talbot |
| Lieutenancy Wales: | West Glamorgan |
| Country: | Wales |
| Constituency Westminster: | Neath |
| Constituency Welsh Assembly: | Neath |
| Councillor1: | Sonia Reynolds |
| Party1: | Labour |
| Population: | 2,827 |
| Population Ref: | (2001 census) |
| Hide Services: | yes |
Gwaun-Cae-Gurwen is an electoral ward of Neath Port Talbot county borough, Wales. The ward of Gwaun-Cae-Gurwen along with the Lower Brynamman electoral ward makes up the parish of Gwaun-Cae-Gurwen.
Gwaun-Cae-Gurwen consists of some or all of the following settlements: Cwmgors, Gwaun-Cae-Gurwen and Gwaun-Leision in the parliamentary constituency of Neath. Gwaun-Cae-Gurwen consists of a built up area to the west and north, surrounded by farmland. The south eastern part of the ward consists of open moorland.
Gwaun-Cae-Gurwen is bounded by the wards of Quarter Bach of Carmarthenshire to the north; Lower Brynamman and Cwmllynfell to the east; Pontardawe to the south; and Glanamman of Carmarthenshire to the west.
In the 2017 local council elections, the electorate turnout was %. The results were:
| Candidate | Party | Votes | Status | |
|---|---|---|---|---|
| Sonia Reynolds | Labour | 523 | Labour hold | |
| Meirion Jordan | Plaid Cymru | 357 |