Ork or ORK may refer to:
- ORK, the IATA airport code for Cork Airport in Ireland
- An alternate spelling of Orc, the name of a fantasy creature popularized by J. R. R. Tolkien
- Ork (folklore), a mountain demon of Tyrol folklore
- Ork (Warhammer 40,000), a fictional species in the Warhammer 40,000 universe
- Ork (computer game), a game for the Amiga and Atari ST systems, published by Psygnosis in 1991
- Ork!, a 2001 released role-playing game by Green Ronin Publishing
- The home planet of the character "Mork" in the American television series Mork & Mindy
- Ork, a character in the book The Scarecrow of Oz by L. Frank Baum
- GB-ORK, an ISO 3166-2 code for the Orkney Islands