Joachim Trier (born 1 March 1974) is a Danish-born Norwegian filmmaker. He is best known for his Oslo trilogy which comprises the films Reprise (2006), Oslo, August 31st (2011), The Worst Person in the World (2021). For the latter film, he was nominated for the Best Original Screenplay at the 94th Academy Awards, with the film also nominated for Best International Feature. He is also known for directing Louder Than Bombs (2015), Thelma (2017), and the documentary The Other Munch (2018). In addition to an Academy Award, he has also been nominated for a BAFTA Award, two Cesar Awards, and three Cannes Film Festival Awards.

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