This text presents a systematic study of the cults of the Bosporan kingdom, which existed in the South of Russia in the first centuries AD. The research is based on a variety of sources - archaeological and historical. The religion of the Bosporus is viewed in this monograph as a blend of Greek and indigenous Iranian traditions. The first part of the book is dedicated to the cult of Celestial Aphrodite. The second part examines the controversial cult of the Most High God and its alleged Jewish affinities. The book aims to provide an understanding of the religious life in the Greek colonies and the history of the Eastern Mediterranean in late antiquity.