Kouropalatēs, Latinized as curopalates or curopalata (Greek: κουροπαλάτης, from Latin: cura palatii "[the one in] charge of the palace") and Anglicized as curopalate, was a Byzantine court title, one of the highest from the time of Emperor Justinian I (r. 527–565) to that of the Komnenoi in the 12th century. The female variant, held by the spouses of the kouropalatai, was kouropalatissa.
History and nature of the title 
The title is first attested (as curapalati) in the early 5th century, as an official of vir spectabilis rank under the castrensis palatii, charged with the maintenance of the imperial palace (cf. Western European "majordomo"). When Emperor Justinian I (r. 527–565) made his nephew and heir Justin II curopalates in 552, however, the office took on new significance, and became one of the most exalted dignities, ranking next to Caesar and nobilissimus and, like them, reserved initially for members of the imperial family. Unlike them, however, it later came to be granted to important foreign rulers, mostly in the Caucasus. Thus, from the 580s to the 1060s, sixteen Georgian ruling princes and kings held that honorific, as well as, after 635, several Armenian dynasts.
According to the Klētorologion of Philotheos, written in 899, the insignia of the rank were a red tunic, mantle and belt. Their award by the Byzantine emperor signified the elevation of the recipient to the office. By the 11th–12th century, the dignity had lost its earlier significance: it was granted as an honorary title to generals outside the imperial family, and its functions were gradually being supplanted by the protovestiarios, whose original role was limited to the custody of the imperial wardrobe. The title survived into the Palaiologan period, but was rarely used.
List of prominent Byzantine holders 
- Justin II, under his uncle Emperor Justinian I (r. 527–565).
- Baduarius, under his father-in-law Emperor Justin II (r. 565–578).
- Peter, the brother of Emperor Maurice (r. 582–602).
- Domentziolus, the nephew of Emperor Phocas (r. 602–610).
- Theodore, brother of Emperor Heraclius (r. 610–641).
- Artabasdos, under Emperor Leo III the Isaurian (r. 717–741).
- Michael I Rangabe, the son-in-law of Emperor Nikephoros I (r. 802–811).
- Bardas, uncle and effective regent for Emperor Michael III (r. 842–867).
- Leo Phokas, general and brother of Emperor Nikephoros II Phokas (r. 963–969).
- Kazhdan 1991, p. 1157.
- Toumanoff 1963, pp. 202, 388.
- Bury 1911, p. 33.
- Evans, James Allan (23 June 1999). "An Online Encyclopedia of Roman Emperors: Justin II (565–579 A.D.)". Retrieved 17 September 2011.
- Rapp 2003, p. 374.
- Bury 1911, p. 22.
- Holmes 2005, p. 87.
- Kazhdan 1991, p. 1749.
- Bury 1911, p. 34.
- Martindale, Jones & Morris 1992, p. 164.
- Bury, John B. (1911). The Imperial Administrative System of the Ninth Century: With a Revised Text of the Kletorologion of Philotheos. London, United Kingdom: Oxford University Press.
- Holmes, Catherine (2005). Basil II and the Governance of Empire (976–1025). Oxford, United Kingdom: Oxford University Press. ISBN 978-0-19-927968-5.
- Kazhdan, Alexander Petrovich, ed. (1991). The Oxford Dictionary of Byzantium. New York, New York and Oxford, United Kingdom: Oxford University Press. ISBN 978-0-19-504652-6.
- Martindale, John Robert; Jones, Arnold Hugh Martin; Morris, J., eds. (1992). The Prosopography of the Later Roman Empire, Volume III: A.D. 527–641. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-20160-5.
- Rapp, Stephen H. (2003). Studies In Medieval Georgian Historiography: Early Texts And Eurasian Contexts. Louvain, Belgium: Éditions Peeters. ISBN 90-429-1318-5.
- Toumanoff, Cyril (1963). Studies in Christian Caucasian History. Washington, District of Columbia: Georgetown University Press.