Morris King "Mo" Udall (June 15, 1922 – December 12, 1998) was an American politician. He was a member of the United States House of Representatives for Arizona's 2nd district. He served as a representative from 1961 to 1991. He was a member of the Democratic Party.
Udall ran for President of the United States in 1976, but lost to Jimmy Carter during the primaries.
Udall died in Washington, D.C. from complications of Parkinson's disease, aged 76.