Antonio is a Shakespearean favorite--the Bard used it in no less than five of his plays, and has long been a ubiquitous classic in Spanish-speaking countries, where the nickname Tonio is also prevalent..
Antonio Lucio Vivaldi, Italian Baroque composer
Antonio Cesaro (born Claudio Castagnoli), American pro wrestler
(Jose) Antonio Dominguez Banderas, Spanish actor
Antonio Sabato, Jr., American actor and model
Antonio Gramsci, Italian Marxist theorist
Antonio "Toni" Negri, Italian Marxist theorist
Antonio Salieri, Italian classical composer
Antonio Tajani, Italian politician, vice president of the European Parliament
(José) Antonio de la CaridadMaceo y Grajales, Cuban revolutionary
(Luis) Antonio Valencia (Mosquera), Equadorian footballer
Antonio Ethan Gates, American NFL football player
Antonio Cromartie, American football player
Antonio Brown, American football player
Antonio DeShonta Smith, American football player
Antonio RicoJohnson, American football player
Antonio Dixon, American football player
Antonio Coleman, American CFL football player
Antonio Garay, American football player
Antonio Hardy aka Big Daddy Kane, American rapper
Antonio Musa Brassavola, Italian physician
Antonio Carlos Brasileiro Jobim, Brazilian Bossa Nova composer
Antonio Francisco Lisboa aka Aleijadinho, Brazilian Baroque sculptor
Antonio Fernandez Carriedo, the personification of Spain in the manga/anime "Axis Powers: Hetalia"
Antonio Diego aka Bane, villain in the Batman series Juan Antonio Gonzalo, character in movie "VickyCristinaBarcelona"
"Baby Antonio's Circus," Australian children's TV series Stefan Antonio Salvatore, one of the lead characters on TV's, "The Vampire Diaries"