De Imperatoribus Romanis (DIR) is an online peer-reviewed encyclopedia about the emperors of the Roman Empire, including the Byzantine Empire. It was established in 1996 by Michael DiMaio, and hosted at Salve Regina University.[1] The site has been defunct since June 2023,[2] but it is still available in the Internet Archive.
The Cambridge Companion to the Age of Constantine says that its articles "offer sound overviews and a regularly updated bibliography".[3]