Kretschmer is a German surname. Notable people with the surname include:
Ernst Kretschmer (1888–1964), German psychiatristMarian Kretschmer (born 1983), German comics artistOtto Kretschmer (1912–1998), German U-Boat commander in World War IIPaul Kretschmer (1866–1956), German linguistDaniel Kretschmer, German hip hop and reggae musicianTim Kretschmer (1991–2009), German spree killerUwe Kretschmer,Highly successful Business Manager