Denis Pankratov (Russian: ????? ?????????; born 4 July 1974) is a retired Russian butterfly swimmer of the 1990s, who was best known for winning the butterfly double at the 1996 Summer Olympics in Atlanta, United States in a unique style.
His 100 m butterfly triumph is particularly remembered for his swimming over 25 m of the first lap underwater and then 15 m in the opposite direction, also underwater.
He trained at the Volgograd club with fellow individual gold medallist at Swimming World World Swimmer of the Year Yevgeny Sadovyi.