Lok may refer to:

  • LOK (Hellenic Army), Mountain Raider Companies (1946-1975) of the Greek Army
  • Lok (Star Wars), a fictional planet in the Star Wars universe
  • Legends of Kesmai (LOK), an online role-playing game
  • Legend of Korra, an American television series and the sequel to Avatar:The Last Airbender
  • Lok, the protagonist of William Golding's novel The Inheritors
  • Lok, a fictional character in the video game Tak and the Power of Juju and its sequels and film adaptation
  • Lok (Titel), Serbia, a village
  • Lok, Levice District, Slovakia, a village
  • Lok, Pakistan, a village