| Foss Glacier | |
| Type: | Mountain glacier |
| Location: | King County, Washington, U.S. |
| Map: | USA Washington |
| Label Position: | right |
| Map Size: | 225 |
| Coordinates: | 47.5681°N -121.2114°W |
| Coordinates Ref: | [1] |
| Length: | 0.35miles |
| Terminus: | Barren Rock |
| Status: | Retreating |
Foss Glacier is within the Alpine Lakes Wilderness of Snoqualmie National Forest in the U.S. state of Washington and is on the northeast slope of Mount Hinman.[2] Foss Glacier retreated almost 500m (1,600feet) between 1950 and 2005.[3] Foss Glacier is separated from the nearly vanished Hinman Glacier to the west by a ridge.[2]