Takagi Sayuki (高木紗友希) is a Japanese pop singer signed to Hello! Project. She is a member of Juice=Juice and a former member of the SATOYAMA Movement unit Triplet. She was first introduced at the Hello! Project 2009 Shinjin Kouen 11gatsu ~Yokohama Fire!~ concert on November 23, 2009 as a new member of Hello Pro Kenshuusei.