'Manjača Gora' was a German and Croat operation against the partisan forces of Josip Broz Tito in the puppet state of Croatia in Axis-occupied Yugoslavia (30 September/9 October 1942).

The undertaking’s objective was the destruction of the partisan forces (six brigades and two detachments) located in the Manjača Gora (mountain region), some 15.5 miles (25 km) to the south-west of Banja Luka in western Bosnia. The Axis forces comprised, as their German component, the 3/721^st Infanterieregiment, 661^st Artillerieabteilung, 714^th Nachrichtenkompanie and 714^th Pionierkompanie of Generalleutnant Friedrich Stahl’s 714^th Division and, as their Croat component, five companies of the 1^st Recruit Battalion, 2^nd and 5^th Companies of the 'Banja Luka' Volunteer Battalion, elements of the 8^th Artillery Group, the 1^st, 2^nd and 3^rd Gendarmerie Companies, the 12^th and 29^th Companies of the 11^th Regiment, and the 2^nd and 3^rd Air Force Field Companies of the Petrinja Brigade.

The course and results of this operation are unclear, and it may in fact have been part of the larger 'Jajce I' operation that was under way in the same general area. German reports state that their and Croat losses were minimal, and claimed an estimated 130 partisans killed.