Yūna Mimura is a Japanese voice actor and actress born on December 12, 1990, in Osaka Prefecture, Japan. She is affiliated with the Himawari Theatre Group. Her blood type is O, and her height is 156 centimeters.

Mimura began her career as a child actor in the late 1990s, initially performing under her real name, Yūki Mimura. She transitioned to voice work in the early 2000s, focusing on dubbing for foreign films and radio dramas before becoming more active in anime and video games around 2013.

Her most prominent and long-running role is Kaede Ichinose in the Aikatsu! franchise. She first voiced the character in the original 2012 television anime and has continued to reprise the role across numerous subsequent series, including Aikatsu! 2, Aikatsu! 3, Aikatsu! 4, Aikatsu Stars!, Aikatsu on Parade!, and the 2023 film Aikatsu! 10th Story: Mirai e no Starway. Other significant anime roles include Riko Izumi in Hanebad!, Louise in The 8th Son? Are You Kidding Me?, Maya in both seasons of Gundam Build Divers Re:RISE, Ryo in Kemurikusa, Patty in Pikachin-Kit, Recela in The Seven Deadly Sins: Grudge of Edinburgh, and Prince Pearl in the Shimajirō film Umigame to Shōnen, in which she played the role of Hanako.

In addition to her anime work, Mimura has an extensive career in dubbing foreign films and television series. She is known as the Japanese voice of Luna Lovegood in the Harry Potter film series, a role originally played by Evanna Lynch. Her other dubbing credits include Emily Dickinson in Dickinson and the character Qingcha Huang in Tokyo Mew Mew New. She has also appeared in video games, portraying Kaede Ichinose in multiple Aikatsu! games, Sakiyu Chini in Gaist Crusher, and providing voices for titles such as Quiz RPG: The World of Mystic Wiz and Idorism.

Beyond voice acting, Mimura has performed on stage and has participated in radio dramas for NHK-FM. Her personal interests include crafting with wool felt, and she has shared that she owns several cats and previously owned a dog.