'Petrinja' was a German and Croat operation against the partisan forces of Josip Broz Tito in the Okučani, Lipik, Banova Jaruga and Novska area of the puppet state of Croatia in Axis-occupied Yugoslavia (22/24 June 1943).

The Axis forces allocated to the operation were, from the German army, elements of Generalleutnant Josef Brauner von Haydringen’s 187^th Reserve-Division and one armoured train, and from the Croat home army elements of Pukovnik Josip Solc’s 1^st Mountain Brigade and Pukovnik Stjepan Grlić's 4^th Mountain Brigade. The Germans suffered no losses or made any claims, and there is no mention in the post-war Yugoslav literature of any clashes in that area during this period, so it is probable that the operation either failed or was cancelled.