Ruben Östlund (Swedish pronunciation: [ˈrʉːbɛnˈœstlɵnd]) (born April 13 1974) is a Swedish filmmaker best known for his satirical black comedy films Force Majeure (2014), The Square(2017) and Triangle of Sadness (2022). He is the recipient of various accolades, including two Palmes d'Or, four European Film Awards and nominations for three Academy Awards.

Östlund was born in Styrsö, Gothenburg Municipality, Sweden. After high school, he started working in various ski resorts in the Alps during the winter seasons. While in the Alps, he began making skiing videos for his friends, which helped him obtain a job at a local production company.