The book covers the main stages of life, scientific and pedagogical activity of outstanding mathematician and mechanic of 20th century, Academician of Academy of Sciences of USSR, Academician of NAS of Ukraine O.V. Pogorelov, winner of the Lenin Prize, the State Prize of the USSR, two State Prizes of Ukraine in the Field of Science and Technology, the M.I. Lobachevsky International Prize, laureate of several awards of NAS of Ukraine. An index of printed works is presented, which introduce readers to the scientific work of the scientist. The memoirs of colleagues about O.V. Pogorelov are given. For researchers and anyone interested in the history of national science.