| Fairy Lake | |
| Location: | Gallatin County, Montana |
| Coords: | 45.9044°N -110.9588°W |
| Type: | Lake |
| Inflow: | Sacagawea Peak |
| Basin Countries: | United States |
| Elevation: | 2303m (7,556feet) |
| Pushpin Map: | Montana#USA |
| Pushpin Map Alt: | Location of lake in Montana, USA |
Fairy Lake is a lake in Gallatin County, Montana at the base of Sacagawea Peak, a part of the Bridger mountains in south central Montana. It is located within the northwestern section of the Gallatin National Forest and sits at an elevation of 7557feet.