Aleksandr Olegovich Kornelyuk (Александр Олегович Корнелюк) (born 28 June,1950 in Baku) was a Soviet athlete who competed mainly in the 100 metres. He trained at Dynamo in Moscow.
Kornelyuk began athletics in 1963 and became a member of the USSR National Team in 1970. He competed for the USSR in the 1972 Summer Olympics held in Munich, Germany in the 4 x 100 metre relay where he won the silver medal with his team mates Vladimir Lovetsky, Juris Silovs and Valeri Borzov. Kornelyuk also won a 50m silver medal at the 1972 European Indoor Championships behind his teammate Valeri Borzov.
In 1972 Kornelyuk was awarded the Medal For Labour Heroism.