| Country: | MNE |
| Type: | M |
| Route: | 12 |
| Map: | M-12 main road MNE 2016.svg |
| Direction A: | South |
| Terminus A: | in Meljine |
| Direction B: | North |
| Terminus B: | in Sitnica |
| Length Km: | 18.9 |
| Length Round: | 1 |
| Municipalities: | Herceg Novi |
| Previous Type: | M |
| Previous Route: | 11 |
| Next Type: | R |
| Next Route: | 1 |
M-12 highway (cnr|Magistralni put M-12) is a Montenegrin roadway.
In January 2016, the Ministry of Transport and Maritime Affairs published bylaw on categorisation of state roads.[1] With new categorisation, this road was categorised as M-12 highway.