| Nuthinaw Mountain | |
| Map: | British Columbia |
| Mapframe: | yes |
| Mapframe-Zoom: | 8 |
| Mapframe-Caption: | Interactive map of Nuthinaw Mountain |
| Elevation M: | 1732 |
| Prominence M: | 427 |
| Listing: | List of volcanoes in Canada |
| Location: | British Columbia, Canada |
| Range: | Stikine Plateau |
| Coordinates: | 58.79°N -131.0628°W |
| Topo Maker: | NTS |
| Type: | Subglacial mound |
| Volcanic Region: | Northern Cordilleran Volcanic Province |
| Last Eruption: | Pleistocene |
Nuthinaw Mountain is a mountain on the Stikine Plateau in northern British Columbia, Canada, located east of Tutsingale Mountain and 720NaN0 northwest of Dease Lake on the north side of Tachilta Lakes. It is a product of subglacial volcanism during the Pleistocene period when this area was covered by thick glacial ice, forming a subglacial volcano that never broke through the overlying glacial ice known as a subglacial mound.
Nuthinaw is a Tahltan name meaning Cariboo fence went right into mountain.