Remi Mitani is a Japanese singer and idol known for her work as a vocal artist within the Aikatsu! multimedia franchise. Born on May 11, 1990, she performed as a member of the idol group STAR☆ANIS and was active under the management of Akihabara's DearStage.

Her primary industry role was providing the singing voices for several main characters in the Aikatsu! anime series and films. Her credits include serving as the singing voice for the character Otome Arisugawa. She also performed as the singing voice for Miyabi Fujiwara, a role that appears in various Aikatsu! film projects including the 2015 release Aikatsu! Music Award - Minna de Shou wo Moracchaima SHOW! and the 2016 film Aikatsu!: Nerawareta Mahou no Aikatsu! Card. Additionally, she took over the singing voice role for the character Yurika Todo following the departure of previous vocalist Moe Yamazaki from STAR☆ANIS.

Beyond her solo contributions as a vocalist for specific characters, Mitani helped form a vocal unit called Flash Fractal alongside her fellow STAR☆ANIS members Eri Aino and Yuna Ichikura. Her vocal performances were noted for their range, as she utilized different voice variations when singing for distinct characters. This versatility reportedly led some fans to not immediately recognize her as the vocalist when they first heard her sing for characters like Yurika and Miyabi. She became the first STAR☆ANIS member who was exclusively part of that group to voice a second-generation character within the franchise.

In April 2020, Mitani announced that she was leaving DearStage and would be going on hiatus from her singing career to pursue a new direction. Subsequent reports list her as retired as of October 2023.