List of Famous people named Alexios

Alexios Apokaukos, also Latinized as Alexius Apocaucus, was a leading Byzantine statesman and high-ranking military officer during the reigns of emperors Andronikos III Palaiologos and John V Palaiologos. Although he owed his rise to high state offices to the patronage of John VI Kantakouzenos, he became, together with Patriarch John XIV Kalekas, one of the leaders of the faction supporting Emperor John V in the civil war of 1341–1347 against his one-time benefactor. Apokaukos died when he was lynched by political prisoners during an inspection of a new prison.

Alexios I Komnenos, Latinized Alexius I Comnenus, was Byzantine emperor from 1081 to 1118. Although he was not the founder of the Komnenian dynasty, it was during his reign that the Komnenos family came to full power. Inheriting a collapsing empire and faced with constant warfare during his reign against both the Seljuq Turks in Asia Minor and the Normans in the western Balkans, Alexios was able to curb the Byzantine decline and begin the military, financial, and territorial recovery known as the Komnenian restoration. The basis for this recovery were various reforms initiated by Alexios. His appeals to Western Europe for help against the Turks were also the catalyst that likely contributed to the convoking of the Crusades.

Alexios III Megas Komnenos, or Alexius III, was Emperor of Trebizond from December 1349 until his death. He is perhaps the best-documented ruler of that country, and his reign is distinguished by a number of religious grants and literary creations.

Alexios II Komnenos, Latinized Alexius II Comnenus, was Byzantine emperor from 1180 to 1183. He ascended to the throne as a minor. For the duration of his short reign, the imperial power was de facto held by regents.

Alexios Komnenos, latinised as Alexius Comnenus, was the eldest son of the Byzantine emperor John II Komnenos and his wife Eirene of Hungary. He was born in February 1106 at Balabista in Macedonia, was made co-emperor with his father at 16 or 17 years of age and died on 2 August 1142 at Attalia, Pamphylia. He was an elder brother of the emperor Manuel I Komnenos, and had a twin sister, Maria Komnene.

Alexios II Megas Komnenos or Alexius II, was Emperor of Trebizond from 1297 to 1330. He was the elder son of John II and Eudokia Palaiologina.

Alexios IV Megas Komnenos or Alexius IV, Emperor of Trebizond from 5 March 1417 to October 1429. He was the son of Emperor Manuel III and Gulkhan-Eudokia of Georgia.

Alexios I Megas Komnenos or Alexius I Megas Comnenus was, with his brother David, the founder of the Empire of Trebizond and its ruler from 1204 until his death in 1222. The two brothers were the only male descendants of the Byzantine Emperor Andronikos I, who had been dethroned and killed in 1185, and thus claimed to represent the legitimate government of the Empire following the conquest of Constantinople by the Fourth Crusade in 1204. Although his rivals governing the Nicaean Empire succeeded in becoming the de facto successors, and rendered his dynastic claims to the imperial throne moot, Alexios' descendants continued to emphasize both their heritage and connection to the Komnenian dynasty by referring to themselves as Megas Komnenos or Grand Komnenos.

Alexios III Angelos was Byzantine Emperor from March 1195 to 17/18 July 1203. A member of the extended imperial family, Alexios came to throne after deposing, blinding and imprisoning his younger brother Isaac II Angelos. The most significant event of his reign was the attack of the Fourth Crusade on Constantinople in 1203, on behalf of Alexios IV Angelos. Alexios III took over the defence of the city, which he mismanaged, and then fled the city at night with one of his three daughters. From Adrianople, and then Mosynopolis, he attempted unsuccessfully to rally his supporters, only to end up a captive of Marquis Boniface of Montferrat. He was ransomed, sent to Asia Minor where he plotted against his son-in-law Theodore Laskaris, but was eventually captured and spent his last days confined to the Monastery of Hyakinthos in Nicaea, where he died.

Alexios IV Angelos or Alexius IV Angelus was Byzantine Emperor from August 1203 to January 1204. He was the son of Emperor Isaac II Angelos and his first wife, an unknown Palaiologina, who became a nun with the name Irene. His paternal uncle was his predecessor Emperor Alexios III Angelos.