Georgy Yakovlevich Prokopenko (Russian: ??????? ????????? ??????????, Ukrainian: ??????? ?????? ??????????; born 21 February 1937) is a retired Soviet swimmer who competed at the 1960 and 1964 Summer Olympics.
In 1964 he won a silver medal in the 200 m breaststroke and finished fourth in the 4 × 100 m medley relay.
He won three European titles in these events in 1962 and 1966, and set two world records in the 100 m breaststroke in 1964.
Between 1962 and 1964 he also set eight European records in the 4 × 100 m medley relay and in the 100 m and 200 m breaststroke disciplines.