Koritnica is a South Slavic place name that may refer to:
Slovenia Koritnica (river), a river in northwestern Slovenia, tributary of the Soča Kal–Koritnica, a village in the Municipality of Bovec, northwestern Slovenia Koritnica, Krško, a village in the Municipality of Krško, southeastern Slovenia Koritnica, Tolmin, a village in the Municipality of Tolmin, northwestern Slovenia Loška Koritnica, a hamlet of Log pod Mangartom, a village in the Municipality of Bovec, northwestern Slovenia
Serbia Donja Koritnica, a village in the Municipality of Bela Palanka Gornja Koritnica, a village in the Municipality of Bela Palanka