Käo may refer to:
Places in Estonia Käo, Saare County, village in Laimjala Parish, Saare County Käo, Tartu County, village in Rõngu Parish, Tartu County
People Henno Käo (1942–2004), Estonian children's writer, book illustrator, poet, and musician Jüri Käo (born 1965), Estonian businessman
See also Kao (disambiguation)