Callistus

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

Patriarchs, popes and antipopes

 * Patriarch Callistus I of Constantinople, patriarch from 1350 to 1353 and from 1354 to 1363
 * Patriarch Callistus II of Constantinople, patriarch in 1397
 * Saint Callixtus I, pope from c. 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 Caravario (1903–1930), Italian Roman Catholic priest and missionary
 * Callistus Chukwu (born 1990), Nigerian footballer
 * Callistus Ndlovu (1936–2019), Zimbabwean politician
 * Callistus Valentine Onaga (born 1958), Nigerian Roman Catholic bishop
 * Callistus Rubaramira (born 1950), Ugandan Roman Catholic bishop
 * Gaius Julius Callistus, a Greek freedman of the Roman emperor Caligula
 * Georg Calixtus (1586–1656), German Lutheran theologian
 * Kallistos Ware (1934–2022), Metropolitan of Diokleia in Phrygia, an Orthodox assistant bishop in the UK
 * Nikephoros Kallistos Xanthopoulos, last of the Greek ecclesiastical historians, flourished c. 1320