Hafþór Júlíus Björnsson
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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.
Known for
Credits
Masters of the Universe (2026)
as Goat Man
The Northman (2022)
as Thórfinnr Tooth-Gnasher
Kickboxer: Retaliation (2018)
as Mongkut
Game of Thrones: The Last Watch (2019)
as Self
Finally Dawn (2024)
as Thot
Game of Thrones The IMAX Experience (2015)
as Gregor 'The Mountain' Clegane
Pharaoh's War (2019)
as Frank
Taming the Beast (2026)
as Self
Eddie: Strongman (2015)
as Self
NXT TakeOver: Unstoppable (2015)
as Himself - Audience Member (as Hafthor Bjornsson)
Operation Ragnarok (2018)
as Big John - Icelandic Viking Squad
Born Strong (2017)
as Self
Belle (2023)
Actor
Thor vs Eddie (2022)
as Himself
Fullsterkur (2018)
as Himself
Eddie Hall: The Beast v The Mountain (2022)
as Thor "The Mountain"
Strongman: Beyond the Mountain (2019)
as Self
The Commissioner of Power (2021)
as Himself
Eddie Hall: The Beast vs. The Mountain (2022)
as Self