Kyoko Iwasaki

{{Short description|Japanese swimmer (born 1978)}}

{{Infobox sportsperson

|birth_date={{birth date and age|df=yes|1978|7|21}}

|birth_place=Numazu, Shizuoka, Japan

|medaltemplates={{MedalSport | Women's swimming}}

{{MedalCountry | {{JPN}} }}

{{MedalCompetition|Olympic Games}}

{{MedalGold| 1992 Barcelona | 200 m breaststroke}}

{{MedalCompetition|Summer Universiade}}

{{MedalBronze | 1995 Fukuoka | 200 m breaststroke}}

}}

{{nihongo|Kyoko Iwasaki|岩崎 恭子|Iwasaki Kyōko|extra=married name: Kyoko Saito (斎藤恭子), born July 21, 1978}} is a Japanese swimming coach and retired Olympic swimmer from Numazu, Shizuoka. She won the gold medal in the 200 metres breaststroke at the 1992 Summer Olympics in Barcelona, Spain. She was 14 years and 6 days old, making her, as of prior to the 2024 games, the youngest Olympic gold medalist of all time in the discipline of swimming.{{Cite web |last=Sutherland |first=James |date=2023-05-09 |title=The Youngest Olympic Champions In Swimming History |url=https://swimswam.com/the-youngest-olympic-champions-in-swimming-history/ |access-date=2024-04-25 |website=SwimSwam |language=en-US}}