The Oxford Dictionary of Byzantium (often abbreviated to ODB) is a three-volume historical dictionary published by the English Oxford University Press. With more than 5,000 entries, it contains comprehensive information in English on topics relating to the Byzantine Empire. It was edited by Alexander Kazhdan, and was first published in 1991.[1] Kazhdan was a professor at Princeton University who became a Senior Research Associate at Dumbarton Oaks, Washington, DC before his death.