| Conflict: | Lika-Primorje operation |
| Partof: | World War II in Yugoslavia |
| Date: | 20 March – 15 April 1945 |
| Place: | Lika and Western Bosnia |
| Result: | Yugoslav Army victory
|
| Combatant1: | Yugoslav Partisans |
| Combatant2: | |
| Commander1: | Petar Drapšin Pavle Jakšić Boško Šiljegović |
| Commander2: | Gustav Fehn |
| Units1: | 4th Army |
| Units2: | XV Mountain Corps |
| Strength1: | 70,000 |
| Strength2: | 40,000 |
| Casualties2: | First phase: 5,616 killed, 6,949 wounded and 2,905 wounded |
Lika-Primorje operation was a military operation carried out by the Yugoslav Partisan 4th Army against Wehrmacht units and the Croatian Armed Forces. It was conducted in the area of Lika and Western Bosnia from 20 March to 15 April 1945.
In the first phase, the 4th Army took eastern Lika and Bihać, and in the second it took Gospić, Perušić, Lički Osik and Otočac. After 7 April 1945, units of the 4th Army continued the movement towards Rijeka.
. Mladenko Colić. Pregled operacija na jugoslovenskom ratištu 1941-1945 . 1988. Belgrade. Vojnoistorijski institut.