Hafþór Júlíus Björnsson
Known for Acting
Born November 26, 1988
Place of Birth Reykjavík, Iceland
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.
Filmography
The Northman
2022
as Thórfinnr Tooth-Gnasher
Masters of the Universe
2026
as Goat Man
Game of Thrones: The Last Watch
2019
as Self
Kickboxer: Retaliation
2018
as Mongkut
Finally Dawn
2024
as Thot
Pharaoh's War
2019
as Frank
Game of Thrones The IMAX Experience
2015
as Gregor 'The Mountain' Clegane
Taming The Beast
2026
as Self (archive footage)
Belle
2023
Born Strong
2017
as Self
NXT TakeOver: Unstoppable
2015
as Himself - Audience Member (as Hafthor Bjornsson)
Operation Ragnarok
2018
as Big John - Icelandic Viking Squad
Fullsterkur
2018
as Himself
Eddie Hall: The Beast vs. The Mountain
2022
as Self
The Commissioner of Power
—
as Himself
Strongman: Beyond the Mountain
2019
as Self
Thor vs Eddie
2022
as Himself
Eddie Hall: The Beast v The Mountain
2022
as Thor "The Mountain"