Reishahr (Persian: ری شهر) or Rev Ardashir (ریو اردشیر) was a city on the Persian Gulf in medieval Iran and is currently an archaeological site near Bushehr. It may be identical to the Antiochia-in-Persis of the Seleucid period, but was refounded by Ardashir I (d.AD224), the first ruler of the Sasanian Empire. In the Church of the East, it was seat of the metropolitan bishop of the province of Fars from at least 424.^[1] The name "Rew-Ardashir" means "Rich is Ardashir".^[2]

The city is mentioned by many historians, such as Farhang-i Anandraj, Hamdollah Mostowfi's Nuzhat al-Qulub, Majmal al-tawarikh, and Ibn Balkhi's Farsnameh. In particular, some historians such as Yaqut al-Hamawi's Mu'jam Al-Buldan write of the city being centered on a pre-Islamic academic center of higher learning where scholars converged to study medicine as well as Indian and Greek sciences.^[3]

Dehkhoda dictionary mentions that the city was eventually deserted and its inhabitants moved to Bushehr.

• Potts, Daniel (2018). "Rev-Ardashir (Rishahr)". In Nicholson, Oliver (ed.). The Oxford Dictionary of Late Antiquity, Volume 2: J–Z. Oxford: Oxford University Press. p. 1284. ISBN 978-0-19-881625-6.
• Russell, James R. (2004). Armenian and Iranian studies. Harvard Armenian Texts and Studies. Vol. 9. Harvard University Press. ISBN 978-0935411195.