Hafþór Júlíus Björnsson
- Born
- 26 November 1988 (37 years)
- Place of birth
- Reykjavík, Iceland
- Gender
- Male
Hafþór Júlíus Björnsson is an Icelandic professional strongman, actor, and former professional basketball player. He plays Ser Gregor "The Mountain" Clegane in the HBO series Game of Thrones.
