Harry Houdini (1874–1926) was a famous magician and escape artist.
Houdini may also refer to:
- Houdini (film), a 1953 biographical film about Harry Houdini
- Bess Houdini (1876-1943), Harry Houdini's stage assistant and wife
- Wilmoth Houdini (1895–1973), a calypso musician
- Houdini (software), a high-end 3D animation package
- Houdini (chess), a chess engine for Windows
- Houdini (album), a sludge metal album by The Melvins
- "Harry Houdini (song)", a 1988 song by Canadian band Kon Kan
- "Houdini (song)", a song from Foster the People's 2011 album Torches
- "Houdini", a song from Kate Bush's 1982 album The Dreaming
- Houdini (Meerkat Manor), one of the meerkats in the documentary series Meerkat Manor