| Type: | town |
| Mount Elphinstone | |
| State: | wa |
| Lga: | City of Albany |
| Local Map: | yes |
| Zoom: | 13 |
| Coordinates: | -35.0202°N 117.8532°W |
| Postcode: | 6330[1] |
| Pop: | 82 |
| Pop Year: | 2021 |
| Area: | 2.5 |
| Stategov: | Albany |
| Fedgov: | O'Connor |
| Dist1: | 416.7 |
| Location1: | Perth |
| Dist2: | 152.9 |
| Location2: | Kojonup |
| Dist3: | 2.7 |
| Location3: | Albany |
Mount Elphinstone is a locality in the Great Southern region of Western Australia. It is located from Albany.
As of the 2021 Australian census, 82 people resided in Mount Elphinstone, down from 96 in the . The median age of persons in Mount Elphinstone was 50 years. There were fewer males than females, with 49.4% of the population male and 50.6% female. The average household size was 2.3 people per household.