| State: | AL |
| Type: | AL |
| Route: | 140 |
| Map Custom: | yes |
| Length Mi: | 12.480 |
| Length Ref: | [1] |
| Established: | 1986 |
| Direction A: | West |
| Terminus A: | southeast of Selma |
| Direction B: | East |
| Terminus B: | southeast of Burnsville |
| Counties: | Dallas County |
| Previous Type: | AL |
| Previous Route: | 139 |
| Next Type: | AL |
| Next Route: | 141 |
State Route 140 (SR 140) is a 12.48adj=midNaNadj=mid state highway in Dallas County in the U.S. state of Alabama. It begins at US 80/US 80 Truck/SR 14 Truck/SR 22 Truck/SR 41 just southeast of Selma and ends at an intersection with SR 14 southeast of Burnsville, near the Autauga County line.
SR 140 begins at an intersection with US 80/US 80 Truck/SR 14 Truck/SR 22 Truck/SR 41 just southeast of Selma. It heads to the east-southeast roughly parallel to the Alabama River. As the river curves to the northeast of Selma, so, too, does SR 140. Near the end of the highway, the river bends away to the east and SR 140 continues to the north. It ends at an intersection with SR 14 southeast of Burnsville, less than 0.5miles from the Autauga County line.
SR 140 was previously created on a route from US 82/SR 6 east of Gordo to US 82/SR 6 in Coker. This route was decommissioned by 1979 and is now County Road 140. The current SR 140 was created between 1983 and 1985.[2] It is routed along the former route of SR 14. When a new bypass route heading from the northeastern side of Selma towards Prattville was completed, SR 14 was aligned along the new route, and SR 140 was assigned to the former route of SR 14.