Question: who does marge's voice on the simpsons?
Answer: Julie Deborah Kavner

Julie Deborah Kavner ( born September 7 , 1950 ) is an American actress , voice actress and comedian . She first attracted notice for her role as Valerie Harper 's character 's younger sister Brenda in the sitcom Rhoda for which she won a Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series . She is best known for her voice role as Marge Simpson on the animated television series The Simpsons . She also voices other characters for the show , including Jacqueline Bouvier , and Patty and Selma Bouvier .