Cannabis November 14, 2016November 14, 2016 thcscience_admin Pope Callixtus has been the papal name of three popes of the Catholic Church. Pope Callixtus I (217–222) Pope Callixtus II (1119–1124) Pope Callixtus III (1455–1458) See also[edit] Antipope Callixtus III List of popes Callistus (disambiguation) Topics referred to by the same term