| Heather Lake | |
| Location: | Gallatin County, Montana |
| Coords: | 45.4096°N -110.9362°W |
| Type: | Lake |
| Inflow: | Gallatin Range |
| Outflow: | East Fork Hyalite Creek |
| Basin Countries: | United States |
| Area: | 14acres |
| Elevation: | 9186feet |
| Pushpin Map: | Montana#USA |
| Pushpin Map Alt: | Location of lake in Montana, USA |
Heather Lake is a lake in Gallatin County, Montana in the Gallatin Range in south central Montana. It is located at the head of the East Fork of Hyalite Creek in the Gallatin National Forest and sits at an elevation of 9186feet.