Brun is a surname. Notable people with the surname include:
Ane Brun (born 1976), Norwegian singer/songwriter
Bairbre de Brún (born 1954), Irish politician
Charles Brun (France), engineer
Charles Brun (Denmark) (1866–1919), Danish politician
Charles Le Brun (1619–1690), French painter and art theorist
Conrad Malte-Brun (1755–1826), Danish-French geographer and journalist
Élisabeth-Louise Vigée Le Brun (1755–1842), French painter
Eske Brun(1904–1987), politician in Greenland
Frédéric Brun (writer) (born 1960), writer
Friederike Brun, German writer
Herbert Brün (1918–2000), German-American composer of electronic music
Johan Nordahl Brun (1745–1816), Norwegian poet, dramatist, bishop, and politician
Johannes Brun (1832-1890), Norwegian stage actor
Johannes Brun (officer) (1891-1977), Norwegian military officer and bridge champion
Joseph C. Brun (1907-1998), French-American cinematographer
Napoleon LeBrun (1821–1901), American architect
Pádraig de Brún (1889–1960), Irish clergyman, mathematician and classical scholar
Philippe-Alexandre Le Brun de Charmettes (1785–1870), French historian, poet, and official
Roy Brun (born 1953), American judge and politician
Rudolf Brun, mayor of Zürich 1336–1360
Thomas Brun
Victor Adolphe Malte-Brun (1816–1889), French geographer and cartographer
Viggo Brun, mathematician
Walter Brun, racing driver from Switzerland
