Pope Callixtus III, born Alonso de Borja, but referred to in English-language accounts as Alfonso de Borgia as a member of the House of Borgia, was head of the Catholic Church and ruler of the Papal States from 8 April 1455 to his death, in August 1458.
- Occupation
- Catholic priest
- Position held
- Pope, Bishop of Valencia, cardinal, cardinal priest
- Born
- January 8, 1379
- Died
- August 15, 1458
