Klas Östergren (born 20 February 1955) is a Swedish novelist, short story writer, screenwriter, and translator. Östergren had a breakthrough with his fourth novel Gentlemen in 1980. He has been awarded numerous Swedish literary prizes, such as Doblougska priset in 1998 and the grand prize by the literary society, Samfundet De Nio in 2005, as well as being nominated for the Guldbagge Award for Best Screenplay in 1999. His works have been translated to more than ten languages. In 2014 he was elected a member of the Swedish Academy, but resigned from his seat in 2018.