List of Byzantine emperors

This is a list of the Emperors of the late Eastern Roman Empire, called Byzantine by modern historians. This list does not include many of the emperors that ruled with someone else.

The title of all Emperors before Heraclius was Augustus, but other titles such as Dominus were also used. After Heraclius, the title was changed to the Greek Basileus. This title used to mean "king", "sovereign" but was now used in place of Augustus.

This list begins with Constantine I the Great, the first Christian emperor reigning from Constantinople.