51°56′53″N 5°10′48″W / 51.948°N 5.180°W
 Porthgain harbour in 2005, showing the pier that was the terminus of the Porthgain railway | |
| Overview | |
|---|---|
| Headquarters | Porthgain |
| Locale | Pembrokeshire, Wales |
| Dates of operation | lates 1880s–1931 |
| Successor | Abandoned |
| Technical | |
| Track gauge | 3 ft (914 mm) |
| Length | 625 yards (572 m) |
The Porthgain Railway was a 3 ft (914 mm) narrow gauge industrial railway connecting the Pen Clegyr and St. Bride's quarries with Porthgain harbour. It operated from the late 1880s until 1931.
The line of the track can still be traced as a levelled strip on the clifftop, adjacent to the path to Porthgain harbour.