*1946 NO, Oslo
Klaus Hagerup (born 5 March 1946). He is a Norwegian author, translator, screenwriter, actor and director.He is the youngest of two brothers. He debuted with the poem collection "Slik tenker jeg på dere" ("This is how I think about you") in 1969. During 1968–69 he worked at the Bergen theatre Den Nationale Scene and later at Nationaltheatret and Hålogaland Teater as an actor, instructor, director and writer. He has also acted in several movies, but is best known as a writer of plays for scene and radio theater. He has also written many well-known books, mostly for teenagers, but also for older and younger readers.He is best known for his books about the insecure teenage boy Markus.