Nathan ben Isaac ha-Kohen ha-Babli was a Babylonian Jewish historian of the 10th century. He was the author of a history of the exilarchate that gives many interesting details in regard to the exilarchs, particularly his contemporary Mar Ukba. Extracts from this history were published by Samuel Shullam in his edition of Zacuto's Yuḥasin (Constantinople, 1546), as well as by A. Neubauer (M. J. C. ii. 83 et seq.). Shullam's work is the only surviving source for Nathan's history other than an Arabic fragment published by Israel Friedlander.