Yoshiaki Ochi (越智義朗, Ochi Yoshiaki) is a Japanese composer and percussionist. He frequently works with natural sounds, using water, wood, or stone as musical instruments. He has performed with his brother Yoshihisa Ochi as the Ochi Brothers, as well as with the American microtonal bassoonist Johnny Reinhard. He is a member of the Japan Composer's Association (JACOMPA) and has recorded a number of CDs.