Lardner may refer to:
- Dionysius Lardner (1793-1859), Irish scientific writer
- James L. Lardner (1802-1881), American Civil War admiral
- John Lardner (1973-), Scottish snooker player
- John Lardner (sports writer) (1912-1960), American sports journalist
- Nathanial Lardner (1684-1768), English theologian
- Ring Lardner (1885-1933), American writer
- Ring Lardner Jr. (1915-2000), American film screenwriter