Kaori Utatsuki (詩月 カオリ, Utatsuki Kaori, born September 6) is a J-pop singer who is signed to Geneon Universal Entertainment. She is a former member of the music production group I've Sound based in Sapporo, Japan. She has performed several songs for eroge together with the other I've Sound members. In August 2007, she released her first maxi single under Geneon Universal Entertainment titled "Shining Stars Bless," which was used as the opening theme for the anime Nanatsuiro Drops.
In 2013, it was announced that Utatsuki will leave I've Sound after the release of her album Going On on March 20, 2013.