Lydia Lunch (born Lydia Kaylee Koch, June 2, 1959, Rochester, New York) is an American singer, poet, writer, actress and self-empowerment speaker whose career was spawned by the New York No Wave scene. The Boston Phoenix named Lunch "one of the 10 most influential performers of the 1990s."

Her work typically features provocative and confrontational noise music delivery and has maintained an anti-commercial ethic operating independently of major labels and distributors. Lunch's moniker was given to her by the rock band Mink DeVille because she stole food for her friends.