Willard M. Munger, Sr. (January 20, 1911 – July 11, 1999) was a Minnesota politician and a member of the Minnesota House of Representatives from northeastern Minnesota. First elected in 1954, he was re-elected to four more terms before running for the Minnesota Senate in 1964. Unsuccessful in that bid, he ran for the House again in 1966, and was re-elected every two years until his death in 1999. He holds the record as the longest-serving member of the House at over 42 years and seven months.