Margaret Brown (1867–1932) was an American socialite and Titanic survivor.
Margaret Brown may also refer to:
- Margaret Brown (criminal) (c. 1828–?), New York criminal and thief
- Margaret Wise Brown (1910–1952), American author
- Margaret Brown (film director), American film director
- Margaret Brown (ichthyologist) (1918–2009), Indian-born British ichthyologist
- Margaret Brown (mathematics educator), British academic
- Margaret Lumley Brown (1886–1975), English occult figure of the 20th century
- Margaret Miller Brown (1903–1970), Canadian classical pianist and music educator
- Margaret Oliver Brown (1912–1990), Scottish painter and illustrator
- Maggie Brown (born 1948), American playwright, director and actress
- Margaret Sibella Brown (1866–1961), Canadian bryologist
- Margaret H. Brown (1887–1978), Canadian nurse and author