Yuriy Borisovich Dyachkov (Russian: Юрий Борисович Дьячков; born 13 July 1940) is a retired Soviet decathlete. He competed at the 1960 Summer Olympics but failed to finish. He placed sixth at the 1962 European Championships^[2] and won the national title in 1965 and 1966. Dyachkov is the son of the Olympic discus thrower Nina Dumbadze and athletics coach Boris Dyachkov.^[1][3]