Brun is a surname. Notable people with the surname include:
Ane Brun (born 1976), Norwegian singer/songwriterBairbre de Brún (born 1954), Irish politicianCharles Brun (France), engineerCharles Brun (Denmark) (1866–1919), Danish politicianCharles Le Brun (1619–1690), French painter and art theoristConrad Malte-Brun (1755–1826), Danish-French geographer and journalistÉlisabeth-Louise Vigée Le Brun (1755–1842), French painterEske Brun(1904–1987), politician in GreenlandFrédéric Brun (writer) (born 1960), writerFriederike Brun, German writerHerbert Brün (1918–2000), German-American composer of electronic musicJohan Nordahl Brun (1745–1816), Norwegian poet, dramatist, bishop, and politicianJohannes Brun (1832-1890), Norwegian stage actorJohannes Brun (officer) (1891-1977), Norwegian military officer and bridge championJoseph C. Brun (1907-1998), French-American cinematographerNapoleon LeBrun (1821–1901), American architectPádraig de Brún (1889–1960), Irish clergyman, mathematician and classical scholarPhilippe-Alexandre Le Brun de Charmettes (1785–1870), French historian, poet, and officialRoy Brun (born 1953), American judge and politicianRudolf Brun, mayor of Zürich 1336–1360Thomas BrunVictor Adolphe Malte-Brun (1816–1889), French geographer and cartographerViggo Brun, mathematicianWalter Brun, racing driver from Switzerland