Riko (written: 理子, 璃子, 莉子, 里琴 or りこ in hiragana) is a feminine Japanese given name. . Notable people with the given name Riko. Notable people with the name include: Riko Azuna (born 1993), Japanese singer. Riko E. Bishop (born 1956), Japanese judge. Riko Gunji (born 2002), Japanese badminton player. Riko Higashio (東尾 理子; born 1975), Japanese professional golfer. Riko Kohara (小原 莉子; born 1990), Japanese voice actress and guitarist. Riko Korie (梱枝 りこ), Japanese illustrator and member of Kero Q and Makura. Riko Miyagi (宮城 理子), Japanese manga artist. Riko Mizuno (born 1932), Japanese gallerist.
https://en.wikipedia.org/wiki/Riko