Arlen Ingolf Erdahl (February 27, 1931 – September 21, 2023) was an American politician. He served as a member of the Minnesota House of Representatives from 1963 to 1970, Minnesota Secretary of State from 1971–1975 and was a U.S. Representative from Minnesota, serving the first district from 1979–1983, in the 96th and 97th congresses. He died on September 21, 2023, at the age of 92.