Leininger is a surname. Notable people with the surname include:
- Claus Leininger (1931–2005), German theatre director and manager
- Dannette Leininger (born 1963), American handball player
- James Leininger (born 1998), American child reincarnation case
- James R. Leininger, American businessman
- Madeleine Leininger (1925–2012), American nurse
See also
edit- Leininger Peak, mountain of Antarctica