
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

Game of Thrones: The Last Watch (2019)
as Self

Kickboxer: Retaliation (2018)
as Mongkut

Pharaoh's War (2019)
as Frank

Game of Thrones The IMAX Experience (2015)
as Gregor 'The Mountain' Clegane

Taming The Beast (2026)
as Self

Finally Dawn (2024)
as Thot

Operation Ragnarok (2018)
as Big John - Icelandic Viking Squad

Born Strong (2017)
as Self

Eddie: Strongman (2015)
as Self

NXT TakeOver: Unstoppable (2015)
as Himself - Audience Member (as Hafthor Bjornsson)

Thor vs Eddie (2022)
as Himself

Belle (2023)
Actor

Eddie Hall: The Beast v The Mountain (2022)
as Thor "The Mountain"

The Commissioner of Power (2021)
as Himself

Eddie Hall: The Beast vs. The Mountain (2022)
as Self

Strongman: Beyond the Mountain (2019)
as Self

Fullsterkur (2018)
as Himself





