| Little Bog River | |
| Mouth Location: | Mill Brook |
| Mouth Coordinates: | 44.6832°N -68.2679°W |
| Subdivision Type1: | Country |
| Length: | about 5miles |
| Tributaries Left: | Fly Brook |
The Little Bog River is a short stream in Hancock County, Maine. From its source (44.7463°N -68.2813°W) in Osborn, the river runs [1] south to its confluence with Mill Brook in Eastbrook. Mill Brook flows west to Webb Pond. Via Mill Brook, Webb Pond, and Webb Brook, the Little Bog River is part of the Union River watershed.