| Country: | MNE |
| Type: | R |
| Route: | 12 |
| Map: | R-12 regional road MNE 2016.svg |
| Direction A: | West |
| Terminus A: | in Budimlja |
| Direction B: | East |
| Terminus B: | in Kalače |
| Length Km: | 36.3 |
| Length Round: | 1 |
| Municipalities: | Berane, Petnjica, Rožaje |
| Previous Type: | R |
| Previous Route: | 11 |
| Next Type: | R |
| Next Route: | 12.1 |
R-12 regional road (cnr|Regionalni put R-12) (previously known as R-20 regional road) is a Montenegrin roadway.[1]
It serves as the best road connection to Petnjica Municipality and can be used as alternative to highway.
In January 2016, the Ministry of Transport and Maritime Affairs published bylaw on categorisation of state roads. With new categorisation, R-20 regional road was renamed as R-12 regional road.