| Little East Branch Cupsuptic River | |
| Source1: | West Kennebago Mountain |
| Source1 Coordinates: | 45.1014°N -70.8354°W |
| Mouth: | Cupsuptic River |
| Mouth Coordinates: | 45.1075°N -70.8857°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
The Little East Branch Cupsuptic River is a short tributary of the Cupsuptic River in Oxford County, Maine. It flows [1] from its source on the slope of West Kennebago Mountain to its mouth on the Cupsuptic.