| Country: | MNE |
| Type: | R |
| Route: | 3 |
| Map: | R-3 regional road MNE 2016.svg |
| Direction A: | South-East |
| Terminus A: | in Pljevlja |
| Junction: | in Dajevića Han |
| Direction B: | North-West |
| Terminus B: | in Metaljka |
| Length Km: | 40.3 |
| Length Round: | 1 |
| Municipalities: | Pljevlja |
| Previous Type: | R |
| Previous Route: | 2 |
| Next Type: | R |
| Next Route: | 4 |
R-3 regional road (cnr|Regionalni put R-3) is a Montenegrin roadway.[1]
It serves as connection between Pljevlja and Bosnia and Herzegovina.
In January 2016, the Ministry of Transport and Maritime Affairs published bylaw on categorisation of state roads. With new categorisation, new R-3 regional road on this route was established from previous municipal road.