| Thunder Glacier | |
| Type: | Mountain glacier |
| Location: | Whatcom County, Washington, USA |
| Map: | USA Washington |
| Label Position: | right |
| Map Size: | 225 |
| Coordinates: | 48.7736°N -121.8631°W |
| Coordinates Ref: | [1] |
| Length: | 0.9miles |
| Terminus: | Talus/Icefall |
| Status: | Retreating |
Thunder Glacier is located on the west slopes of Mount Baker in the North Cascades of the U.S. state of Washington.[2] The glacier descends to the west on the north side of the Black Buttes.[2]