Petar Nedeljković was a general in the Royal Yugoslav Army who commanded the 4th Army during the German-led Axis invasion of Yugoslavia of April 1941 during World War II. Nedeljković's command consisted of the Mura, Sava and Slavonia Divisions, and one brigade of the 1st Cavalry Division. The 4th Army was responsible for the Yugoslav-Hungarian border and was deployed behind the Drava between Varazdin and Slatina.