| Viaduct Quarry | |
| Aos: | Somerset |
| Interest: | Geological |
| Coordinates: | 51.1967°N -2.5438°W |
| Displaymap: | Somerset |
| Area: | 0.3ha |
| Enref: | 1000040 |
Viaduct Quarry is a 0.3 hectare geological Site of Special Scientific Interest near Shepton Mallet on the Mendip Hills in Somerset, notified in 1984.
This disused quarry is a Geological Conservation Review site identified as the best exposed and thickest section in the Downside Stone, a localised limestone development which accumulated adjacent to the Lower Jurassic Mendip Island.