| State: | ME |
| Type: | ME |
| Route: | 140 |
| Map Custom: | yes |
| Length Mi: | 22.30 |
| Length Ref: | [1] |
| Direction A: | South |
| Terminus A: | in Buckfield |
| Junction: | |
| Direction B: | North |
| Terminus B: | in Jay |
| Counties: | Oxford, Franklin |
| Previous Type: | ME |
| Previous Route: | 139 |
| Next Type: | ME |
| Next Route: | 141 |
State Route 140 (SR 140) is part of Maine's system of numbered state highways, located in Oxford and Franklin counties. The southern terminus of the route is in Buckfield, at the intersection with SR 117. The northern terminus of the route is in Jay, at the intersections with SR 4 and SR 17. SR 140 is 22.3miles long.