Cullmann is a German surname. Notable people with the surname include:
Bernd Cullmann (born 1939), West German athlete, winner of gold medal in 4×100 m relay at the 1960 Summer OlympicsBernhard Cullmann (born 1949), nicknamed "Bernd", German footballerJohn G. Cullmann (1823–1895), Bavarian-born political activist and founder of Cullman, AlabamaOscar Cullmann (1902–1999), Christian theologian in the Lutheran tradition