The monograph highlights the main problems of the formation of the ethnic composition of the Crimean population during the invasion of the Goths on the peninsula, the Hun invasion, the rule of the Byzantine Empire and the Khazar Khaganate. A holistic picture of the history of the population of the mountainous and southern coastal Crimea of ​ ​ the late Roman and early medieval times - the legendary and mysterious Crimean Gothia - is being recreated.