James Edward "Jim" Doyle (born November 23, 1945) is a Wisconsin politician and member of the Democratic Party. He took office in January 2003 as the 44th Governor of Wisconsin. He defeated incumbent Governor Scott McCallum by a margin of 45% to 41%, a plurality reduced by the relative success of a third party candidate, Ed Thompson, the Libertarian candidate and former Governor Tommy Thompson's younger brother. Although in 2002 Democrats increased their number of governorships, Doyle was the only one of them to unseat a sitting Governor.

James Doyle was born in Washington, D.C., the son of Ruth Bachhuber and James E. Doyle, Sr. who were founding members of the modern Democratic Party in Wisconsin. James E. Doyle Sr. ran unsuccessfully for governor in 1954 and was appointed as a federal judge in 1965. Ruth Bachhuber Doyle was the first woman from Dane County to be elected to the Wisconsin State Assembly in 1948.

Doyle, who graduated from Madison West High School in 1963, attended Stanford University for three years, then returned home to Madison to finish his senior year at the University of Wisconsin–Madison. After graduating from college and inspired by John F. Kennedy's call to public service, Doyle worked as a teacher in Tunisia as part of the Peace Corps from 1967 to 1969.