| Armstrong Lake | |
| Location: | Blue Earth County, Minnesota |
| Coordinates: | 44.1531°N -94.3447°W |
| Type: | Lake |
| Pushpin Map: | Minnesota |
| Pushpin Map Alt: | Location of Armstrong Lake in Minnesota |
Armstrong Lake is a lake in Blue Earth County, Minnesota, in the United States.
Armstrong Lake was named for John Armstrong, an early settler.[1]