EntityQ271461· pop 21· linked from 185 articlesAda KokSign in to saveDutch swimmer (born 1947)Connectionsbutterfly strokeEntityUnited StatesCountryNetherlandsConceptAmsterdamEntityMexico CityCityOlympic GamesConceptGerman Democratic RepublicEntityUtrechtConceptNorth HollandEntityInternational Olympic CommitteeEntity1964 Summer OlympicsEntity1968 Summer OlympicsEntitycompetitive swimmingEntityWorld AquaticsEntityswimming at the Summer OlympicsEntitySarah SjöströmEntityKristin OttoEntitySummer McIntoshEntityBritta SteffenEntityJulia EfimovaEntityCategories1947 births20th-century Dutch sportswomenDutch female butterfly swimmersDutch female freestyle swimmersEuropean Aquatics Championships medalists in swimmingLiving peopleMedalists at the 1964 Summer OlympicsMedalists at the 1968 Summer OlympicsOlympic gold medalists for the NetherlandsOlympic gold medalists in swimmingOlympic silver medalists for the Netherlands