Gwendolynne Sophia Moore (born April 18, 1951) is an American politician serving as the U.S. representative for Wisconsin's 4th congressional district since 2005. In 2016, Moore was elected to serve as caucus whip of the Congressional Black Caucus for the 115th United States Congress. She is a member of the Democratic Party. Her district is based in Milwaukee and as a result of the 2011 redistricting also includes some Milwaukee County suburbs: Bayside, Brown Deer, Cudahy, Fox Point, Glendale, St. Francis, South Milwaukee, West Milwaukee, Shorewood, and Whitefish Bay. Moore is the first woman to represent the district and the second woman after Tammy Baldwin and the first African American elected to Congress from Wisconsin. Moore is currently Wisconsin's longest serving Representative, after Representative Ron Kind retired, in 2023.