Ayahi Takagaki (高垣 彩陽, Takagaki Ayahi, born October 25, 1985) is a Japanese actress, voice actress and singer.

She had her first major role as voice actor in 2007, providing the voice of Jasmine, a main character of the anime series Deltora Quest. She was subsequently featured in Venus Versus Virus and Da Capo II as Lucia Nahashi and Asakura Otome, respectively, as well as Feldt Grace in Mobile Suit Gundam 00. In addition to voice acting, Takagaki has also appeared on camera. She, Aki Toyosaki, Haruka Tomatsu, and Minako Kotobuki appeared on the Anime Song Plus (アニソンぷらす, Anison Purasu) television show as a narrator on April 6, and as part of Sphere on April 20, 2009, and July 27, 2009 by herself.