Ao Takahashi (高梁 碧, Takahashi Ao, August 8, 1979) is a Japanese voice actress from Saitama prefecture. She belongs to the Kenyu Office. She was formerly affiliated with Aoni Production, Aksent, and Kenyu Office. Her husband is voice actor Shinnosuke Tachibana (立花慎 之介) and her old stage name and real name is Hiroko Takahashi (高橋 裕子, Takahashi Hiroko). Himawari and Tonuma Yuzu are aliases of Ao Takahashi for adult work.