Donald Mark Ritchie (born December 21, 1951) is an American politician and a former Minnesota Secretary of State. Ritchie was elected the 21st Minnesota Secretary of State on November 7, 2006. He was re-elected in 2010. He co-chairs the Minnesota USA Expo Bid Committee, serves as the Civilian Aide to the Secretary of the Army for Minnesota, and is the President of Global Minnesota. He is a member of the Democratic-Farmer-Labor Party.