| Railroad Name: | West Side Belt Railroad |
| System Map: | West Side Belt Railroad - System Index Map.jpg |
| Marks: | WSB |
| Locale: | Pennsylvania |
| Start Year: | 1895 |
| End Year: | 1920 |
| Successor Line: | Pittsburgh and West Virginia |
| Length: | 22.5 miles |
The West Side Belt Railroad [1] was a standard gauge railroad incorporated July 25, 1895. It ran from Temperanceville, to Clairton, Pennsylvania, with a branch to Banksville. It acquired the Little Saw Mill Run Railroad by merger in 1897, and the Bruce and Clairton Railroad in 1901.[2] The railroad was bankrupt in 1908.[3] The line was purchased by the Pittsburgh and West Virginia Railway in 1920.[4]