Planina (]; , Gottschee German: Aobə) is a village in the Municipality of Semič in Slovenia. It lies on the southern slopes of Mount Mirna () in the southern part of Kočevje Rog. It was inhabited by Gottschee Germans that were expelled in 1941 during the Second World War. The area is part of the historical region of Lower Carniola. The municipality is now included in the Southeast Slovenia Statistical Region.