Kostyantyn "Kostya" Rurak (Ukrainian: Костянтин "Костя" Рурак; born on 9 April 1974 in Chelyabinsk, in the Russian SFSR of the Soviet Union) is a retired sprinter from Ukraine, who twice competed at the Summer Olympics: 1996 and 2000. He set his personal best in the men's 100 metres (10.17) on 3 August 2000 in Kyiv.