Mio Narita (成田 実生, Narita Mio; born 18 December 2006) is a Japanese competitive swimmer. She is the 2022 World Junior champion and 2022 Junior Pan Pacific champion in both the 200-metre individual medley and the 400-metre individual medley. She is a former world junior record holder in the 400-metre individual medley.
Source: “Mio Narita”, English Wikipedia (CC BY-SA 4.0), excerpt
