Historians of Justinian I

Procopius of Caesarea (Greek: Προκόπιος ὁ Καισαρεύς Prokópios ho Kaisareús; Latin: Procopius Caesariensis; c.–after 565) was a prominent late antique Byzantine scholar from Palaestina Prima. Accompanying the Byzantine general Belisarius in Emperor Justinian's wars, Procopius became the principal Byzantine historian of the 6th century, writing the History of the Wars, the Buildings, and the Secret History. He is commonly classified as the last major historian of the ancient Western world.

Theophanes of Byzantium (Greek: Θεόφανης ὁ Βυζάντιος; fl. 6th century) was a Byzantine historian.

John of Ephesus (or of Asia) (c. 507 – c. 588) was a leader of the early Syriac Orthodox Church in the sixth century and one of the earliest and the most important historians to write in Syriac.

John Malalas (Greek: Ἰωάννης Μαλάλας, Iōánnēs Malálas; c. – 578) was a Syrian chronicler from Antioch.

Evagrius Scholasticus (Greek: Εὐάγριος Σχολαστικός) was a Syrian scholar and intellectual living in the 6th century AD, and an aide to the patriarch Gregory of Antioch. His surviving work, Ecclesiastical History (Ἐκκλησιαστικὴ Ἱστορία), comprises a six-volume collection concerning the Church's history from the First Council of Ephesus (431) to the emperor Maurice’s reign until Scholasticus' death.

Agathias or Agathias Scholasticus (Greek: Ἀγαθίας σχολαστικός; c. – 582/594), of Myrina (Mysia), an Aeolian city in western Asia Minor (Turkey), was a Greek poet and the principal historian of part of the reign of the Roman emperor Justinian I between 552 and 558.

Victor of Tunnuna (in Latin Victor Tunnunensis) (died circa 570) was Bishop of the North African town of Tunnuna, a chronicler from Late Antiquity, and considered a martyr by Isidore of Seville.

Menander Protector (Menander the Guardsman, Menander the Byzantian; Greek: Μένανδρος Προτήκτωρ or Προτέκτωρ), Byzantine historian, was born in Constantinople in the middle of the 6th century AD. The little that is known of his life is contained in the account of himself quoted in the Suda (Mu, 591: Μένανδρος). Menander mentions his father Euphratas, who came from Byzantium, and his brother Herodotus. He at first took up the study of law, but abandoned it for a life of pleasure. When his fortunes were low, the patronage accorded to literature by the Emperor Maurice, at whose court he was a military officer (hence the epithet Protector, which denotes his military function), encouraged him to try writing history.

John the Lydian or John Lydus (Greek: Ἰωάννης Λαυρέντιος ὁ Λυδός; Latin: Ioannes Laurentius Lydus) (ca. AD 490 – ca. 565) was a Byzantine administrator and writer on antiquarian subjects.