| Flett Glacier | |
| Type: | Mountain glacier |
| Location: | Mount Rainier National Park, Pierce County, Washington, USA |
| Map: | USA Washington |
| Label Position: | right |
| Map Size: | 225 |
| Coordinates: | 46.9061°N -121.8022°W |
| Coordinates Ref: | [1] |
| Length: | 0.35miles |
| Terminus: | Moraines/proglacial lake |
| Status: | Retreating |
Flett Glacier refers to two glaciers on the northwestern flank of Mount Rainier in the U.S. state of Washington. The glaciers lie on a subsidiary peak of Rainier, the Observation Rock. There are two sections of glacial ice, an eastern lobe at about 7600feet to 7300feet in elevation, a smaller western lobe at about 7200feet in elevation.[2] Meltwater from the glacier flows into the Puyallup River.
Flett Glacier commemorates the botanist John B. Flett, who climbed Little Tahoma in 1895.[3]