Kenneth J. Rothman (October 11, 1935 – April 26, 2019) was an American lawyer and politician. He was a member of the Democratic Party. He served as the 41st Lieutenant Governor of Missouri from 1981 to 1985. He was a member of the Missouri House of Representatives from 1963 to 1981. He also served as the Speaker of the Missouri House of Representatives from 1977 to 1981. He was born in St. Louis, Missouri to Jewish family.