- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 52°58'23"N 3°37'25"W
- Eastings/Northings: 291055, 342981
- OS Grid: SH910429
- Mapcode Local: GBR 6C.JN7F
- Mapcode Global: WH66S.9JML
Location and coordinates are for the approximate centre of Cwmtirmynach within this administrative area.
Geographic features and populated places may cross administrative borders.