Ahrendt is a German surname. Notable people with the surname include:
- Bernd Ahrendt, German rower
- Christian Ahrendt (born 1963), German politician
- Lothar Ahrendt (born 1936), German politician
- Peter Ahrendt (1934–2013), German sailor
See also
- Angela Ahrendts (born 1960), U.S. businesswoman