Eastern Roman Empire (Byzantine Empire) / Ζήνων / Flavius Zeno Augustus (Emperor Zeno), first reign

Zeno the Isaurian (Latin: Flavius Zeno Augustus; Greek: Ζήνων), originally named Tarasis Kodisa Rousombladadiotes, was Eastern Roman Emperor from 474 to 475 and again from 476 to 491. Domestic revolts and religious dissension plagued his reign, which nevertheless succeeded to some extent in foreign issues. His reign saw the end of the Western Roman Empire under Romulus Augustus, but he contributed much to stabilizing the eastern Empire.

In ecclesiastical history, Zeno is associated with the Henotikon or "instrument of union", promulgated by him and signed by all the Eastern bishops, with the design of solving the monophysite controversy.