| Unit Name: | 3rd Assault Division |
| Dates: | 1942–1945 |
| Country: | Democratic Federal Yugoslavia |
| Branch: | Yugoslav Partisan Army |
| Type: | Infantry |
| Size: | ~3200 (upon formation) |
| Command Structure: | 2nd Corps |
| Nickname: | Montenegrin Division |
| Battles: | World War II in Yugoslavia |
| Notable Commanders: | Pero Ćetković |
The 3rd Assault Division (Treća udarna divizija) was a Yugoslav Partisan division formed in Glamočko polje on 9 November 1942. Upon its formation it had around 3,200 soldiers from three brigades: 5th Proletarian Brigade, 10th Herzegovina Brigade and 1st Dalmatia Brigade. It was commanded by Pero Ćetković and its political commissar was Radomir Babić.[1] During the Case Black, the division was disestablished after suffering heavy loses. It was re-established during the late September 1943 as a part of the 2nd Corps.[2]