Kempf is a surname. Notable persons with that name include:
Andreas Kempf (born 1967), German curler
Franz Kempf (born 1926), Australian artist
Freddy Kempf (born 1978), British pianist residing in Berlin
Hippolyt Kempf (born 1965), Swiss skier
Julije Kempf (1864–1934), Croatian historian and writer
Martine Kempf, French scientist
Paul Kempf (1856–1920), German astronomer, astrophysician
Roger Kempf (1927–2014), French writer
Starr Kempf (1917–1995), American sculptor and architect best known for his wind kinetic sculptures
Werner Kempf (1886–1964), German World War II Panzer General
Wilhelm Kempf (bishop) (1906–1982), German bishop of the Roman Catholic Diocese of Limburg
Wilhelm Kempf (psychologist) (born 1947), Austrian psychologist and researcher