The article addresses development of absolute chronology of the Imenkovo culture sites from the Samara Bend. The radiocarbon dating method allows the author to refine the chronological position of the archaeological sites, which are key sites to distinction of the two stages of the Imenkovo culture in the Samara Volga region. The radiocarbon data from Sidelkino - Timyashevo type of site and the Studeny Ovrag settlement confirm the fact of simultaneous existence of several cultural – historical groups in the Middle Volga. The dates obtained for the archeological sites of the Khazar time on the Samara Bend are later compared to the Imenkovo sites and mark the upper chronological border of the Imenkovo culture. The chronological framework of the Imenkovo culture in the Samara Volga region is defined within 4^th – middle 7^th century.