Horn is a surname. Notable people with the surname include:
Alan F. HornAlfred Aloysius "Trader" Horn, an African trader during the Scramble for AfricaAlfred Horn (1918–2001), American mathematicianHorn clause is a term in formal logic named after himAndrew Horn (died 1328) fishmonger, of Bridge Street, London, Chamberlain of the City (1320-8), author of Liber HornAndrew Horn (filmmaker) (b. 1952) director of The Nomi SongAnton Ludwig Ernst Horn (1774-1848), German physicianAshley Horn, singer and media personalityBlair Horn, Canadian rowerBob Horn (broadcaster)Bruce Horn (born 1960), programmerCarl von Horn (1903–1989), Swedish generalCarl Graf von Horn (1847–1923), Bavarian general and War MinisterCharles Edward Horn (1786-1849), English composerCody Horn (born 1988), American actress and modelCorran Horn, character in Star Wars franchiseDave van Horn (born 1960), American baseball coachDimitris Horn (1921-1998), famous Greek actorDon Horn (born 1945), American football quarterbackFrederick W. Horn, American lawyer and politicianFrederik Winkel Horn (1845–1898), Danish writer and translatorFrederik Winkel-Horn (1756–1837), Danish writerGabriel Horn (1927-2012), Briths biologistGeorge Henry Horn (1840–1897), U.S. entomologistGreg Horn, American comic book artistGuildo Horn (born 1963), German singerGustav Horn, Count of BjörneborgGyula Horn, Prime Minister of Hungary from 1994–1998Hans Horn (1873-1968), Norwegian engineer and industrialistHorn of Kankas, a family in Finland and SwedenCount Arvid Horn (1664–1742), Swedish statesmanCount Gustaf Horn (1592–1657), commander of the Swedish forces in the Thirty Years' WarEvert Horn (1585-1615), Swedish soldierBrita Horn (1745-1791), Swedish courtier and letter writerJeremy Horn (born 1975), American mixed martial artistJim Horn (born 1940), American musicianJoan Kelly Horn (born 1936), Missourian politicianJoe Horn (born 1972)Joseph M. Horn, American psychologistJulian Horn-Smith, British businessmanKaniehtiio Horn (born 1986), actressKarl Friedrich Horn (1762-1830), English composerKeith Van Horn (born 1975), American basketball playerLaurence R. HornLawrence Horn, record producerMarie-Louise Horn (1912–1991), German tennis playerMichael "J" Horn (born 1979), American musician and musical directorMichelle Horn (born 1987), American actressMichiel Horn (born 1939), Canadian historianMike Horn (born 1966), Swiss explorer and adventurerMilton Horn (1906-1995), Russian-American sculptorNoel Van Horn (born 1968), American born Canadian comic book artistPaul Horn (1930–2014), flautistDr. Paul Horn, computer scientistPhilip de Montmorency, Count of Horn (1518-1568), nobleman in the Low Countries during the Eighty Years WarRebecca Horn (born 1944), German installation artistRoni Horn (born 1955), American visual artist and writerRoy Horn (born 1944), German-American entertainerRudolf Horn (born 1954), Austrian biathlete and cross-country skierSally P. Horn (born 1958), geographerSam Horn (born 1963), baseball playerShifra Horn (born 1951), Israeli authorShirley Horn (1934-2005), American jazz singer and musicianSiegbert Horn (1950-2016), East German slalom canoeistSiegfried Horn (1908-1993), archaeologist and Bible scholarSteve Horn (1931-2011), university president and U.S. CongressmanSteve Took's Horns, an English rock band of the late 1970s, led by Steve Peregrin TookTaylor Horn (born 1992), American singerTed Horn (1919-1948), American race car driverTom Horn (1860-1903), American scoutTor Egil Horn (born 1976), Norwegian footballerTrevor Horn (born 1949), British musicianWade Horn (born 1976), American psychologistWalter Horn (1908–95), German-born US academicWalther Hermann Richard Horn (1871-1939), German entomologistWelby Van Horn (1920-2014), American tennis playerWerner D. Horn, American politician.William Van Horn (born 1939), American comic book artist