Callistus

Callistus, Calistus, Callixtus, and Calixtus (all four in Latin) and Kallistos (in Greek; meaning the most beautiful one) may refer to:

Popes and antipopes

• Saint Callixtus I, pope from about 217 to 222
• Pope Callixtus II, pope from 1119 to 1124
• Antipope Callixtus III, antipope from 1168 to 1178
• Pope Callixtus III, pope from 1455 to 1458

Other persons

• Callistus, a Roman general of the 3rd century more commonly known as Balista
• Callistus Xanothopoulos, a patriarch of Constantinople
• Gaius Julius Callistus, a Greek freedman of the Roman emperor Caligula
• Georg Calixtus, a Lutheran theologian
• Georgius Calixtus, a 17th-century proponent of ecumenism
• Kallistos Ware, Metropolitan of Diokleia, an Orthodox assistant bishop in the UK
• Nicephorus Callistus Xanthopoulos, last of the Greek ecclesiastical historians, flourished around 1320

Other

• Callistus (beetle), a ground beetle genus
• Catacomb of Callixtus