Janice Kay Hahn (born March 30, 1952) is an American politician serving as the member of the Los Angeles County Board of Supervisors from the 4th district since 2016 and Chair of Los Angeles County since 2022. A member of the Democratic Party, she was a U.S. Representative from California from 2011 to 2016, elected in the 36th congressional district until 2013 and later in the 44th congressional district. She was previously a member of the Los Angeles City Council, representing the 15th district from 2001 to 2011. From 1997 to 1999, she served as an elected representative on the Los Angeles Charter Reform Commission.