'Bilo Gora' was a German and Croat operation against the partisan forces of Josip Broz Tito in the Bilo mountain region of the puppet state of Croatia in Axis-occupied Yugoslavia (19/22 February 1943).

The undertaking’s objective was the destruction of a partisan concentration of the 4^th 'Slavonia' Division in the mountain area to the south-west of Virovitica.

The German contribution to the operation took the form of elements of Generalleutnant Josef Brauner von Haydringen’s 187^th Reserve-Division, and that of the Croats the 2^nd Battalion and 4^th Battalion of Pukovnik Josip Solc’s (soon Pukovnik Stjepan Peričić's) 1^st Mountain Brigade, 1^st Battalion and 4^th Battalion of Pukovnik Stjepan Grlić's 4^th Mountain Brigade and the Personnel Replacement Transfer Company/1^st Regiment.

The Axis forces swept the area and made contact with the partisan forces, but the latter’s main force escaped. According to the Germans, the Axis losses were 11 men killed, 18 wounded and 34 missing, and those of the partisans 76 men killed, three wounded and five captured.