Paul Falck Hagen (19 March 1920 – 19 May 2003) was a Danish film and television actor. He appeared in over 100 films between 1952 and 1999. He is most known for playing Mr. Clausen in the television series Huset på Christianshavn, which aired between 1970 and 1977.

He was born in Copenhagen, and died in Nakskov, Denmark. He is buried in Langø cemetery on Lolland island where he lived the last years of his life.