Costanzo is an Italian given name, translated from the Latin name Constantius. It is also used as an, originally patronymic, surname. It may refer to:
People with the surname Costanzo Alessandra Costanzo, Italian electrical engineer Alfredo Costanzo (born 1943), Australian racing driver Angelo Costanzo (born 1976), Australian soccer player Blake Costanzo (born 1984), American football player Claudio Costanzo (born 1985), Italian footballer Filumena Costanzo (died 1923), Italian-Canadian bootlegger Francisco Costanzo (1912–?), Uruguayan boxer Franco Costanzo (born 1980), Argentine footballer Gerald Costanzo, American writer Jack Costanzo (1919–2018), American musician Jodine Costanzo Marc Costanzo (born 1972), Canadian guitarist and record producer Maurizio Costanzo (1938–2023), Italian television presenter Moreno Costanzo (born 1988), Swiss-Italian footballer Paulo Costanzo (born 1978), Canadian actor Robert Costanzo (born 1942), American actor Saverio Costanzo (born 1975), Italian film director Sharon Costanzo (born 1970), Canadian musical artist
People with the given name Costanzo Costanzo Festa (died 1545), Italian composer Costanzo Porta (died 1601), Italian composer Costanzo Ciano (1876–1939), Italian naval officer Costanzo Preve (1943–2013), Italian philosopher Costanzo Varolio (1543–1575), Italian physician
See also Constanzo Costanza (disambiguation) Francesco Costanzo Cattaneo (1602–1665), Italian painter Villar San Costanzo, a municipality in the Province of Cuneo, Italy San Costanzo may refer, in Italian, to any one of the numerous saints named Constantius