| State: | AL |
| Type: | AL |
| Route: | 109 |
| Map Custom: | yes |
| Length Mi: | 9.907 |
| Length Ref: | [1] |
| Established: | 1946 |
| Direction A: | South |
| Terminus A: | at the Florida state line |
| Direction B: | North |
| Terminus B: | north of Madrid |
| Previous Type: | AL |
| Previous Route: | 108 |
| Next Type: | AL |
| Next Route: | 110 |
State Route 109 (SR 109) is a 9.907adj=midNaNadj=mid state highway in Houston County in the southeastern part of the U.S. state of Alabama. The southern terminus of the highway is at the Florida state line, where it serves as a continuation of State Road 77 (SR 77). The northern terminus of the highway is at an intersection with U.S. Route 231 (US 231) north of Madrid.
SR 109 is routed along a two-lane road for its entire length. It serves as a connecting route between Graceville, Florida and Dothan, Alabama. Graceville is located approximately 5miles south of the Florida state line.[2]