who does the voice over for bart simpson
Nancy Jean Cartwright
Introduction
Nancy Jean Cartwright (born October 25, 1957) is an American actress and voice actress. She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons". 
Nancy Jean Cartwright Nancy Jean Cartwright Nancy Jean Cartwright
Nancy Cartwright Nancy Cartwright Nancy Cartwright
Introduction Introduction Introduction
Nancy Jean Cartwright (born October 25, 1957) is an American actress and voice actress. She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons".  Nancy Jean Cartwright (born October 25, 1957) is an American actress and voice actress. She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons".  Nancy Jean Cartwright (born October 25, 1957) is an American actress and voice actress. She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons". Cartwright also voices other characters for the show, including Nelson Muntz, Ralph Wiggum, Todd Flanders, Kearney, Database, and Maggie (previously voiced by fellow co-star, Yeardley Smith
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Nancy Cartwright [SEP] Introduction
Nancy Jean Cartwright (born October 25, 1957) is an American actress and voice actress. She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons". Cartwright also voices other characters for the show, including Nelson Muntz, Ralph Wiggum, Todd Flanders, Kearney, Database, and Maggie (previously voiced by fellow co-star, Yeardley Smith). Cartwright was born in Dayton, Ohio. Cartwright moved to Hollywood in 1978 and trained alongside voice actor Daws Butler. Her first professional role was voicing Gloria in the animated series "Richie Rich", which she followed with a starring role in the television movie "Marian Rose White" (1982) and her first feature film, "" (1983).