Mary Bell (born 1957) is an English woman who at age 11 was convicted of the manslaughter of two younger boys.

Mary Bell may also refer to:

People Mary Bell (aviator) (1903–1979), Australian aviator Mary Bell (American Civil War nurse) (1840–?) Mary Bell (politician) (1885–1943), Scottish politician Mary A. Bell (1873–1941), African-American artist Mary Ann Bell (fl. 1806–fl. 1831), British fashion merchant, fashion designer and fashion journalist Mary Hayley Bell (1911–2005), English actress, writer and dramatist Mary Hemings Bell (1753–after 1834), freed slave once owned by U.S. president Thomas Jefferson Mary L. Bell (1901–1995), first African-American to own and operate a radio station in the city of Detroit, Michigan Mary and Molly Bell, disguised themselves as men and fought in the American Civil War Mary and Annie Bell (1844–1874), English Christian missionaries Mary Alexandra Bell Eastlake (1864–1951), née Bell, Canadian painter and jewelry maker Mary Bell Smith (1818–1894), also known as Mary Bell, American educator, social reformer, and writer Mary Ross Bell (1923–2022), physicist

Fictional characters Flower Witch Mary Bell, a 1992 anime series, and the title character Mary Bell Marybell, a manga by Kimiko Uehara

See also

Mary Belle, a given name