Riho Iida (飯田 里穂 Iida Riho?, born 26 October 1991 in Saitama) is a Japanese ex-child model-turned-actress and voice actress and singer.
Iida came into the spotlight when she was 11 years old, appearing on theTensai Terebi Kun MAX (天才てれびくんMAX) series on NHK Educational TV in 2002. Since then she starred in many movies and TV series. She was also a model of a famous lolita gravure magazine pure 2. She played the leading role in the film Shougaiken gibu no okurimono (障害犬ギブのおくりもの), which won a prize at the Japan Educational Film Festival. Her first photobook Pool (プール) in 2003 became the top-selling photobook in Japan.
She plays one of the main characters in the Love Live! anime and game project, Rin Hoshizora. The success of Love Live! contributed to an increase in exposure of her career. In 2014 she formed the duo group 4to6 with her co-star Pile. They released their first single in August 2014. She is a member of a mini unit in the Love Live! project, Lily White, alongside Aina Kusuda and Suzuko Mimori.