Toshinobu "Toshi" Kubota (久保田利伸 Kubota Toshinobu, born 24 July 1962) is a Japanese singer, songwriter, musician, music producer, and radio personality. Toshinobu Kubota has produced six million-seller records and thirty-three Top 40 singles during his career. He is currently part of Sony Music Japan. In addition, Kubota has composed and written songs for many singers including Iwasaki Hiromi, Misia, Toshinori Yonekura, Koizumi Kyoko, and many other recording artists.