| Lyman Glacier | |
| Type: | Mountain glacier |
| Location: | Chelan County, Washington, U.S. |
| Map: | USA Washington |
| Label Position: | right |
| Map Size: | 225 |
| Coordinates: | 48.1703°N -120.8967°W |
| Coordinates Ref: | [1] |
| Length: | 0.25miles |
| Terminus: | Proglacial lake |
| Status: | Retreating |
Lyman Glacier is in Wenatchee National Forest in the U.S. state of Washington and is just northeast of Chiwawa Mountain.[2] Between the years 1890 and 2008, Lyman Glacier has retreated 1310m (4,300feet) and lost 86 percent of its area, a reduction in its surface from 1.41sqkm0.02sqkm.[3] Lyman Glacier terminates at a proglacial lake and a series of smaller lakes as well as a pronounced terminal moraine indicate where the glacier once extended to.