<Tr> <Th> Children </Th> <Td> </Td> </Tr> <Tr> <Th> Website </Th> <Td> nancycartwright.com </Td> </Tr> <P> Nancy Cartwright (born October 25, 1957) is an American voice actress and comedian . 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, and Database . </P> <P> 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, Twilight Zone: The Movie (1983). </P>

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