The 'Lička-Primorska Operacija' was a Yugoslav operation by the forces of Marshal Josip Broz Tito to isolate and then liberate the region of Bihać, Lika, Gorski Kotar and the Croat coast in in the western part of the puppet state of Croatia in German-occupied Yugoslavia (20 March/15 April 1945).

The formation entrusted with this task was General-lajtnant Peko Dapčević's 4^th Army, which had been formed on 1 March 1945 from the 14^th and 18^th Divisions of the VII Corps, the 9^th, 19^th, 20^th and 21^st 'Dalmatia' Divisions of the VIII Corps, the 13^th, 35^th and 43^rd Divisions of the XI Corps and, soon after this, the 30^th and 31^st Divisions of the IX Corps. The 4^th Army also had an artillery brigade and a motorised artillery battalion, the 1^st Tank Brigade, an engineer and replacement brigade, and a liaison regiment.

The operation liberated Bihać, Lika, Gorski Kotar and the Croat coast along the Adriatic sea with a primary thrust along the axis from Gornji Lapac to Bihać, and a secondary thrust along the axis from Udbina via Korenicato Prijeboj. In two days the 4^th Army’s offensive broke the German defences of General Gustav Fehn’s XV Gebirgskorps, which was effectively destroyed, in Generaloberst Alexander Löhr’s Heeresgruppe 'E' and liberated Bihać and eastern Lika, soon followed by western Lika and most parts of Gorski Kotar and the Croat coast to create a new front line between Lokve, Fuzine and Kraljevica.

The end of the 'Lička-Primorska Operajica' established a new front line between Lokve, Fuzine and Kraljevica.