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Hafþór Júlíus Björnsson

Biography

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

85%

Series

Game of Thrones

2011 · Sci-Fi & Fantasy · Drama

72%

Movie

Masters of the Universe

2026 · Action · Fantasy

70%

Series

The World's Strongest Man

1977 · Reality · Family

70%

Movie

The Northman

2022 · Action · Adventure

70%

Movie

Game of Thrones: The Last Watch

2019 · Documentary

54%

Movie

Kickboxer: Retaliation

2018 · Action · Drama

86%

Movie

Game of Thrones The IMAX Experience

2015 · Drama · Fantasy

61%

Movie

Finally Dawn

2024 · Drama

NR

Movie

Taming the Beast

2026 · Documentary · Drama

64%

Movie

Pharaoh's War

2019 · Action · Thriller

68%

Movie

Eddie: Strongman

2015 · Documentary

84%

Movie

NXT TakeOver: Unstoppable

2015 · Action · Drama

55%

Movie

Operation Ragnarok

2018 · Drama · Horror

69%

Movie

Born Strong

2017 · Documentary

Full Filmography(21)

Himself

Film

2022Eddie Hall: The Beast v The MountainThor "The Mountain"Film

2022The NorthmanThórfinnr Tooth-GnasherFilm

2022Eddie Hall: The Beast vs. The MountainSelfFilm

2021The Commissioner of PowerHimselfFilm

2019Strongman: Beyond the MountainSelfFilm

2019Game of Thrones: The Last WatchSelfFilm

2019Pharaoh's WarFrankFilm

2018Operation RagnarokBig John - Icelandic Viking SquadFilm

2018Kickboxer: RetaliationMongkutFilm

2018FullsterkurHimselfFilm

2017Born StrongSelfFilm

2015Game of Thrones The IMAX ExperienceGregor 'The Mountain' CleganeFilm

2015NXT TakeOver: UnstoppableHimself - Audience Member (as Hafthor Bjornsson)Film

2015Eddie: StrongmanSelfFilm

2011Game of ThronesGregor 'The Mountain' Clegane · 17 episodesTV

1977The World's Strongest ManCompetitor · 1 episodesTV