Kircher is a surname. Notable people with the surname include:
- Al Kircher (1909–2004), American football, basketball, and baseball player and coach
- Alexander Kircher (1867–1939), Austrian-German marine and landscape painter and illustrator
- Armin Kircher (1966–2015), Austrian composer
- Athanasius Kircher (1602–1680), German Jesuit scholar
- George Kircher (1887–1949), American baseball player and coach
- Herwig Kircher, Austrian football player
- Jérôme Kircher, French actor
- Knut Kircher, German football referee
- Mike Kircher (1897–1972), American baseball player
- Pete Kircher, English rock/pop drummer
- Tim Kircher, German football player
- William Kircher, New Zealand actor
