List of Famous people named Constantine

Constantine Bohachevsky, born in Manajiv, Ukraine, was an Archbishop of the Ukrainian Catholic Church. He was the first Ukrainian Catholic Metropolitan in the United States.

Constantine Doukas, Latinized as Ducas, was ruler of Thessaly from c. 1289 to his death in 1303.

Constantine Akropolites or Acropolites, son of the scholar and statesman George Akropolites, was a minister of the Byzantine emperor Michael VIII Palaiologos, until the Emperor dismissed him for his opposition to the union of churches created by the Second Council of Lyon (1272). Under the new emperor Andronikos II, however, Akropolites returned to favor; perhaps as early as 1282 he was appointed Logothete, and on the death of Theodore Mouzalon in 1294, Akropolites was raised to the title of megas logothetes, which he held perhaps as late as 1321. He died sometime before August 1324, for a document dated May–August 1324, concerning the Monastery of the Anastasis, states he is dead.

Constantine Doukas or Ducas, was Byzantine junior emperor from 1074 to 1078, and again from 1081 to 1087. He was born to Emperor Michael VII and Empress Maria of Alania in late 1074, and elevated to junior emperor in the same year. He was junior emperor until 1078, when Michael VII was replaced by Nikephoros III Botaneiates. Because Constantine was not made junior emperor under Nikephoros III, his betrothal to Olympias, the daughter of Robert Guiscard, was broken, which Robert Guiscard used as a pretext to invade the Byzantine Empire. John Doukas forced Nikephoros to abdicate to Alexios I Komnenos in 1081, and shortly after Alexios elevated Constantine to junior emperor under himself. Constantine remained junior emperor until 1087, when Alexios had a son, John II Komnenos. Constantine died in c. 1095.

Constantine Phokas was a Byzantine aristocrat and general.

Constantine, son of Cuilén, known in most modern regnal lists as Constantine III, was king of Scots from 995 to 997. He was the son of King Cuilén. John of Fordun calls him, in Latin, Constantinus Calvus, which translates to Constantine the Bald. Benjamin Hudson notes that insular authors from Ireland and Scotland typically identified rulers by sobriquets. Noting for example the similarly named Eugenius Calvus, an 11th-century King of Strathclyde.