山岸理子 (Yamagishi Riko) is a Japanese pop singer and dancer under Hello! Project as a member and leader of Tsubaki Factory. She first joined Hello! Project as a member of Hello Pro Kenshuusei in June 2012 and was introduced at the June 2012 recital alongside Nomura Minami.
Known For: Acting
Birthday: 1998-11-24
Place of Birth: Chiba, Japan
Also Known As: Yamagishi Riko (山岸理子), Yamagishi Riko, Riko-Riko, りこりこ