(b. 1979) is a Helsinki-based filmmaker. His short films have won several prizes in acclaimed festivals including Cannes Cinéfondation and Locarno. He graduated ELO Helsinki Film School of Aalto University in 2014. Kuosmanen’s debut feature The Happiest Day in the Life of Olli Mäki won the Prix un Certain Regard in 2016 and his second feature film, Compartment no. 6 won the Cannes Grand Prix (ex aequo) in 2021.