Sayuki Takagi (高木 紗友希, Takagi Sayuki, born 21 April 1997, in Chiba Prefecture, Japan) is a Japanese pop singer signed to Hello! Project. She is a member of Hello! Pro Kenshusei and Japanese idol group Juice=Juice. Her official nickname is Sayubē (さゆべぇ). Her fruit in the group is lemon. Takagi is represented by Up-Front Promotion.
Takagi joined Hello! Pro Egg on November 2009.
She was later introduced as a member of Hello! Pro Egg at the 2009 Hello! Project Shinjin Kōen 11-tsuki: Yokohama Fire! on the 23 November 2009.
On October 2010 Takagi co-starred with Ayano Sato in the third Gekijō-ban Hontō ni Atta Kowai Hanashi 3D film Darekairu.
On the 3 February 2013 she was chosen of a new group along with Tomoko Kanazawa, Yuka Miyazaki, Akari Uemura, Karin Miyamoto, and Aina Ōtsuka. The name of the new group was revealed as Juice=Juice on the 25 February. The group made their major debut with the single "Romance no Tochū / Watashi ga Iu Mae ni Dakishimenakya ne (Memorial Edit) / Samidare Bijo ga Samidareru (Memorial Edit)" on the 11 September.