| State: | NM |
| Type: | SR |
| Route: | 309 |
| Map Custom: | yes |
| Length Mi: | 2.432 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | in Belen |
| Direction B: | East |
| Terminus B: | near Belen |
| Counties: | Valencia |
| Previous Type: | NM |
| Previous Route: | 305 |
| Next Type: | NM |
| Next Route: | 311 |
State Road 309 (NM 309) is a 2.4adj=midNaNadj=mid state highway in the US state of New Mexico. NM 309's western terminus is at Interstate 25 Business (I-25 Bus.) in Belen, and the eastern terminus is at NM 47 east of Belen.