Margretta "Gretta" Kok (born 16 October 1944, in

Amsterdam Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...

) is a retired Dutch breaststroke swimmer who participated in the

1960 It is also known as the "Year of Africa" because of major events—particularly the independence of seventeen African nations—that focused global attention on the continent and intensified feelings of Pan-Africanism. Events January * Ja ...

and

1964 Summer Olympics The , officially the and commonly known as Tokyo 1964 ( ja, 東京1964), were an international multi-sport event held from 10 to 24 October 1964 in Tokyo, Japan. Tokyo had been awarded the organization of the 1940 Summer Olympics, but this ho ...

. In 1960, she was fifths in the 200m breaststroke event, whereas in 1964 she did not reach the final. In 1966, she won a gold medal in the 4 × 100 m medley relay at the

European Aquatics Championships The European Aquatics Championships is the continental Aquatics championship for Europe, which is organised by LEN—the governing body for aquatics in Europe. The Championships are currently held every two years (in even years); and since 2022, ...

. Her younger sister, Ada Kok, was also an Olympic swimmer and part of the same team that won the medley gold in 1966.Ria van Velsen
. sports-reference.com

References

1944 births Living people Dutch female breaststroke swimmers Olympic swimmers for the Netherlands Swimmers at the 1960 Summer Olympics Swimmers at the 1964 Summer Olympics Dutch female backstroke swimmers Swimmers from Amsterdam European Aquatics Championships medalists in swimming 20th-century Dutch women {{Netherlands-swimming-bio-stub