Ryo Owatari (大渡 亮, Ōwatari Ryō) is a Japanese guitarist who was born April 4, 1971, in Kanagawa Prefecture, Japan. He was formerly a member of the amateur band pee-ka-boo, but he is mainly known for his work in the band Do As Infinity alongside Tomiko Van and Dai Nagao. After the disbanding of Do As Infinity, he started working with his new band, Missile Innovation. Do As Infinity reformed on September 29, 2008, but Dai Nagao did not return. Ryo has also collaborated with some Avex label artists like Ai Otsuka and Ayumi Hamasaki.