The Hercules Class were four broad gauge steam locomotives for the Great Western Railway. They were the first 0-6-0 locomotives, being built in 1842 by Nasmyth, Gaskell and Company. They were all withdrawn in 1870 and 1871.
From about 1865, the Hercules Class locomotives became part of the Fury Class, along with the Premier Class locomotives.
- This locomotives was named after the Biblical giant, Goliah.
- This locomotive was named after the Greek mythological strongman, Hercules.
- This locomotive was named after the Biblical strongman, Sampson.
- This locomotive was named after Tityos, a giant in Greek mythology.
- Reed, P. J. T. (February 1953). White, D. E., ed. The Locomotives of the Great Western Railway, Part 2: Broad Gauge. Kenilworth: RCTS. pp. B17–B18. ISBN 0-901115-32-0.
- Waters, Laurence (1999). The Great Western Broad Gauge. Hersham: Ian Allan Publishing. ISBN 0-7110-2634-3.