Blok may refer to:
- Blok (surname)
- Blok (character), DC Comics character
- Blok M, downtown shopping area in Jakarta, Indonesia
- Mega Bloks, plastic building blocks produced by Mega Bloks, Incorporated
- The Vlaams Blok (Dutch: Vlaams Blok), former Flemish right-wing nationalist political party
- Blok, a company in the book The Quillan Games by D. J. MacHale
- The blok, a monsters in the animated series Code Lyoko
- The Blok, a character in the animated series Nexo Knights
- Blok (avant-garde group), Polish avant-garde artist collective active in the years 1924-1926