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

• 2026Masters of the Universe — Goat Man
• 2024Finally Dawn — Thot
• 2023Belle
• 2022Eddie Hall: The Beast v The Mountain — Thor "The Mountain"
• 2022The Northman — Thórfinnr Tooth-Gnasher
• 2019Pharaoh's War — Frank
• 2018Kickboxer: Retaliation — Mongkut
• 2018Operation Ragnarok — Big John - Icelandic Viking Squad
• 2015Game of Thrones The IMAX Experience — Gregor 'The Mountain' Clegane
• Game of Thrones — Gregor 'The Mountain' Clegane
• The World's Strongest Man — Competitor

Appearances as themselves (10)

• 2026Taming the Beast — Self
• 2022Eddie Hall: The Beast vs. The Mountain — Self
• 2022Thor vs Eddie — Himself
• 2021The Commissioner of Power — Himself
• 2019Game of Thrones: The Last Watch — Self
• 2019Strongman: Beyond the Mountain — Self
• 2018Fullsterkur — Himself
• 2017Born Strong — Self
• 2015Eddie: Strongman — Self
• 2015NXT TakeOver: Unstoppable — Himself - Audience Member (as Hafthor Bjornsson)