Per Claes Sven Edvard Engdahl (25 February 1909 – 4 May 1994) was a leading Swedish far-right politician.
He was the leader of Sveriges Fascistiska Kamporganisation, SFKO (Sweden's Fascist Struggle Organisation), during the 1930s.
Born in Jönköping, he came from a conservative family with a strong military tradition.
He attended Uppsala University, where he studied philosophy.