Allen Ingvar Olson (born November 5, 1938) is an American Republican politician and attorney who served as the 28th governor of North Dakota from 1981 to 1985.

He received a law degree from the University of North Dakota where he joined Lambda Chi Alpha fraternity and served in the United States Army as a judge advocate general's corps lawyer.

From 1967 to 1969 he served as the assistant director of the Legislative Research Committee, which directed the state's first study of strip mining, soil banks and land reclamation.

He serves as a commissioner of the International Joint Commission of Canada and the United States, having been appointed to the position by President George W. Bush in 2002.

[2] On October 4, 2010, Olson announced that he was backing Independence Party candidate Tom Horner in the 2010 Minnesota gubernatorial election.