| Province: | SK |
| Type: | Hwy |
| Route: | 309 |
| Photo Width: | 250 |
| Length Km: | 18.0 |
| Direction A: | West |
| Terminus A: | near Ebenezer |
| Direction B: | East |
| Terminus B: | at Rhein |
| Rural Municipalities: | Orkney, Wallace |
| Previous Type: | Hwy |
| Previous Route: | 308 |
| Next Type: | Hwy |
| Next Route: | 310 |
Highway 309 is a provincial highway in the Canadian province of Saskatchewan. It runs from Highway 9 near Ebenezer to Highway 637 in Rhein. It is about long, and is concurrent with Highway 726 for its entire length.