The 1942 Montenegro offensive was an Italian-led counter-insurgency operation of World War II, which targeted the Yugoslav Partisans in the Italian governorate of Montenegro and the eastern Herzegovina region of the Independent State of Croatia (NDH). It was carried out from mid-May to June 1942, with Chetnik forces taking part on the Italian side. The offensive followed the conclusion of the joint German-Italian Operation Trio in eastern Bosnia. Together these two operations comprise what was known as the Third Enemy Offensive (Serbo-Croatian Latin: Treća neprijateljska ofenziva) in Yugoslav historiography.