Sugaya Risako (菅谷梨沙子) is a J-pop idol, actress, and model under UP-FRONT PROMOTION. She is a former member of Hello! Project, having joined as a member of Hello! Project Kids in 2002 and later debuting as a member of Berryz Koubou in 2004. During her time in Hello! Project, she was also a member of 4KIDS, Zoku v-u-den, Guardians 4, BeriKyuu, Cat's♥Eye 7, and Dia Lady. She graduated from Hello! Project on March 3, 2015 in a joint graduation concert with the other members of Berryz Koubou.