For the first time, this collection makes available a selection of documents on the history of Jews in old Rus’ that provide unique insight into Slavic–Jewish relations, offering both the original texts in Latin, Hebrew, Church Slavonic, and Arabic, and their English translations. Adding nuance to our understanding of the difficult relations Rus’ had with Khazaria, Jews in Old Rus’ also realigns the position of East European Jews within the larger diaspora of European Jews. This collection meticulously presents legal rulings, religious and liturgical customs, practices regarding food and garments, linguistic acculturation, and the political loyalties of Jews in old Rus’.