Nancy Sullivan may refer to:
Nancy Sullivan (American actress) (born 1969), American actress, television host and screenwriter
Nancy Sullivan (English actress) (born 1985), English actress and singer
Nancy Sullivan (politician) (born 1949), American politician, Maine politician and schoolteacher
Nancy Achin Sullivan (1959–2022), American politician, member of the Massachusetts Senate
Nancy Sullivan (biologist), American cell biologist
Nancy Benoit (1964–2007), formerly Sullivan, American professional wrestling valet and manager
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