Deltour is a surname. Notable people with the surname include:
Carlos Deltour (1864–1920), French rower Félix Deltour (1822–1904), French Latinist Hubert Deltour (1911–1993), Belgian racing cyclist Kedist Deltour (born 1997), Belgian model and beauty pageant titleholder Sylvaine Deltour (born 1953), French sprint canoer