塔修斯·凯斯利乌斯·西普里亚努斯（拉丁语：Thascius Caecilius Cyprianus），英语化后成为居普良（英语：Cyprian, 约200年-258年），圣公会译圣西浦廉，又译西普里安，迦太基教会主教，基督教会殉教圣人，是对基督教教会论影响深远的拉丁教父。他的教会合一观念是促成拉丁教会统一在罗马主教之下的重要思想力量。他的名言：「不以（大公）教会为母的，就没有上帝为父」和「在教会之外没有救恩」，都极力强调大公教会在信仰上的必要性。但他所主张的体制却又不是天主教的教宗制，而是主教联盟，就是以各地主教组成的团契为全教会的最高领导中心。

Cyprian (Latin:Thaschus Cæcilius Cyprianus; c. 200 – September 14, 258 AD) was bishop of Carthage and an important Early Christian writer, many of whose Latin works are extant. He was born around the beginning of the 3rd century in North Africa, perhaps at Carthage, where he received a classical education. Soon after converting to Christianity, he became a bishop in 249. A controversial figure during his lifetime, his strong pastoral skills, firm conduct during the Novatianist heresy and outbreak of the plague, and eventual martyrdom at Carthage vindicated his reputation and proved his sanctity in the eyes of the Church. His skillful Latin rhetoric led to his being considered the pre-eminent Latin writer of Western Christianity until Jerome and Augustine.