Mark Brown may refer to:
Politics
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
Sports
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
Other uses
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