Castellanos is a Spanish surname. Notable people with the surname include:
Aarón Castellanos (1799–1880), Argentine businessman and military commanderAdolfo Jiménez Castellanos (1844–1929), last Spanish Governor General of CubaAgustin Walfredo Castellanos (1902—2000), Cuban-American physicianAlejandro Castellanos (born 1979), Honduran swimmerAlex Castellanos (born 1954), Cuban-American political consultantAlex Castellanos (baseball) (born 1986), American baseball playerAntonio Castellanos (born 1946), Mexican sculptorAntonio Castellanos Mata (1947—2016), Spanish physicistCarlos Castellanos (born 1961) Cuban-American illustrator and syndicated cartoonist co-creator of the 'Baldo' comic stripCarlos Octavio Castellanos (born 1977), Mexican politicianCésar Castellanos (pastor), Colombian pastorCésar Castellanos (politician) (1947–1998), Honduran politicianClaudia Rodríguez de Castellanos, Colombian Evangelical pastorDavid Castellanos (born 1980), American retired soccer playerDeyna Castellanos (born 1999), Venezuelan women's soccer playerEnrique Abaroa Castellanos, Mexican landscape artistErnesto Juan Castellanos (born 1963), Cuban journalist and translatorEvencio Castellanos (1915–1984), Venezuelan pianist and classical musicianFrancisco Xavier Castellanos (born 1953), American neuroscientistFranklin Castellanos (born 1990), Honduran professional footballerGaby Castellanos (born 1970), Venezuelan businesswomanGumercindo Castellanos (born 1953), Mexican politicianHoracio Castellanos Moya (born 1957), Salvadoran writerJesus Castellanos (1878–1912), Cuban writer, journalist and lawyerJesús Antonio Castellanos (born 1978), Spanish footballerJohn Castellanos (born 1957), American actorJosé Castellanos Contreras (1893—1977), Salvadoran army colonel and diplomatJuan de Castellanos, 16th-century Colombian poetJulieta Castellanos (born 1954), Honduran sociologist and president of the National Autonomous University of HondurasJulio Castellanos (1905–1947), Mexican painter and engraverLeandro Castellanos (born 1984), Colombian footballerLeonardo Castellanos y Castellanos (1862−1912), Mexican Roman Catholic bishopLincoln A. Castellanos, American actorLuis Castellanos Tapias, Colombian lawyerManuel Castellanos López (born 1949), Cuban graphic artistMarianella Castellanos (born 1984), Venezuelan softball playerMartín Ramos Castellanos (born 1961), Mexican politician affiliated to the Party of the Democratic RevolutionMigbelis Castellanos (born 1995), Venezuelan model and beauty queenMilton Castellanos Everardo (1920–2011), Mexican politician and lawyerMirla Castellanos, Venezuelan singerNick Castellanos (born 1992), American baseball playerNicolás Castellanos (born 1935), Spanish religious missionary in BoliviaPedro Castellanos (1902–1961), Mexican priest and architectRafael Antonio Castellanos (c. 1725–1791), Guatemalan classical composerRoberto Domínguez Castellanos (born 1954), Mexican politician of the Institutional Revolutionary PartyRosario Castellanos (1925–1974), Mexican poet and authorSantiago Castellanos (born 1977), Spanish former swimmerSara Isabel Castellanos Cortés (born 1946), Mexican politicianSergio Arturo Castellanos (born 1969), Honduran politicianTeo Castellanos, American theater directorVíctor Castellanos (born 1934), Guatemalan former sports shooterVictoriano Castellanos (1795–1862), President of HondurasVincent Castellanos (born 1961), American actorWilfredo Bustillo Castellanos (born 1958), Honduran politician