Kosanović (, ) is a Slavic surname. Many Serbs and Croats have this surname. Notable people with the surname include:
Milan Kosanović (1932–1989), Yugoslav Serb rugby league footballer Milorad Kosanović (1951–2026), Serbian football player and manager Miloš Kosanović (born 1990), Serbian footballer Simeon Kosanović (born 1933), Croatian handball player Željko Kosanović (born 1934), Croatian handball player Zoran Kosanović (1956–1998), Serbian-Canadian table tennis player
See also Kusanović