Operation Southeast Croatia () was a large-scale German-led counter-insurgency operation conducted in the southeastern parts of the Independent State of Croatia (, NDH), (modern-day Bosnia and Herzegovina) during World War II. It was the first of two German-led operations targeting mainly Yugoslav Partisans in eastern Bosnia between 15 January and 4 February 1942. Several days after the conclusion of Operation Southeast Croatia, a follow-up operation known as Operation Ozren was carried out between the Bosna and Spreča rivers. Both operations also involved Croatian Home Guard and Italian troops and are associated with what is known as the Second Enemy Offensive () in post-war Yugoslav historiography. The Second Enemy Offensive forms part of the Seven Enemy Offensives framework in Yugoslav historiography.