| Official Name: | Sinclair, Maine |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Maine#USA |
| Pushpin Label: | Sinclair |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Maine |
| Subdivision Type2: | County |
| Subdivision Name2: | Aroostook |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 591 |
| Coordinates: | 47.1667°N -68.2694°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 04779 |
| Area Code: | 207 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 575487 |
Sinclair is an unincorporated village within Square Lake unorganized territory in Aroostook County, Maine, United States. The community is located on Maine State Route 162 and the western shore of Long Lake in the northeastern part of the county, within the unorganized territory of Square Lake. Sinclair has a post office, with ZIP code 04779.[1] [2]