Mark Brown may refer to:

• Mark Malloch Brown (born 1953), United Kingdom politician
• Mark Brown (Cook Islands) (born 1963), Cook Islands politician and Cabinet Minister
• Mark P. Brown (born 1956), former political candidate of the U.S. Democratic Party

• Mark Brown (footballer, born 1981), Scottish football goalkeeper (Motherwell, Inverness, Celtic, Kilmarnock, Hibernian, Ross County)
• Mark Brown (footballer, born 1984), Scottish football player (Alloa Athletic)
• Mark Brown (golfer) (born 1975), New Zealand golfer
• Mark Brown (linebacker, born 1961), American football linebacker for the Miami Dolphins and Detroit Lions
• Mark Brown (linebacker, born 1980), American football linebacker for the New York Jets and Arizona Cardinals
• Mark Brown (cricketer) (born 1958), Welsh cricketer
• Mark Brown (baseball) (born 1959), American former professional baseball pitcher
• Mark Brown (athlete) (born 1962 or 1963), Paralympic athlete from Great Britain and Gibraltar
• Mark Brown (rugby union) (born 1958), Welsh rugby union player

• Mark Henry Brown (1911–1941), Canadian fighter ace during World War II
• Mark A. Brown (born 1961), American businessman and gaming industry executive
• Mark E. Brown (born 1960), American businessman
• Mark N. Brown (born 1951), NASA astronaut
• Mark Brown (conductor), British choral conductor, see Pro Cantione Antiqua
• Mark Brown, saxophonist and member of The Horne Section
• Mark Brown, creator of Game Maker's Toolkit and video game journalist
• Brownmark (born 1962), bassist for Prince's band the Revolution

• Marc Brown (disambiguation)
• Mark Browne (disambiguation)