| Big Timothy Mountain | |
| Elevation M: | 2160 |
| Elevation Ref: | [1] |
| Prominence M: | 1085 |
| Listing: | List of volcanoes in Canada |
| Location: | British Columbia, Canada |
| District: | Cariboo Land District |
| Map: | Canada British Columbia |
| Label Position: | right |
| Map Size: | 225 |
| Coordinates: | 52.1022°N -120.9311°W |
| Coordinates Ref: | [2] |
| Topo Maker: | NTS |
Big Timothy Mountain, formerly called Boss Mountain and Takomkane Mountain,[3] is a cinder cone in central British Columbia, Canada, located 90NaN0 west of Hendrix Lake and 390NaN0 southwest of Mount Perseus.