Steven Leslie Kagen (born December 12, 1949) is an American politician and physician who was the U.S. representative for Wisconsin's 8th congressional district from 2007 to 2011. He is a member of the Democratic Party. He was defeated in his bid for re-election in 2010 by Reid Ribble, who succeeded him on January 3, 2011. The district is located in the northeastern part of the state and includes Green Bay and Appleton.