Airi Ootsu is a Japanese voice actress affiliated with the agency Remax, born on March 15, 1988, in Tokyo, Japan. Her career in the entertainment industry began in the 2000s, and she has since built a diverse portfolio of work across anime television series, video games, and foreign-language dubbing.

Ootsu has contributed her voice to a wide array of anime productions, often in supporting roles. Among her notable anime appearances are the role of Mimi "Mimi-chan" Tōmatsu in the 2016 series High School Fleet, a part she later reprised in the 2020 film adaptation. She also voiced Kaisei Kishi in the 2020 series Saikyō Kamizmode!. Other significant credits include Draco in Monster Musume, Maria Rasputin in Märchen Mädchen, and characters such as the mother of Sakurajima Mai in multiple installments of the Seishun Buta Yarō series. Her work spans a range of productions, from long-running franchises to single-season series.

Beyond anime, a substantial part of Ootsu's career involves voice acting for video games and dubbing foreign films and television series. She has provided voices for characters in major game titles such as Arknights, the Life is Strange series, Monster Strike, Granblue Fantasy, and Final Fantasy VII Rebirth. In the realm of dubbing, she is well-known as the regular Japanese voice for actress Caity Lotz, particularly for her role as Sara Lance in the Arrowverse series, including Arrow, DC's Legends of Tomorrow, and The Flash. Her dubbing work also includes voicing characters in Hollywood films like Aquaman, Captain Marvel, Mad Max: Fury Road, and Bumblebee.

Ootsu holds teaching licenses for elementary, junior high, and high school, and also possesses a junior black belt in karate. Her personal interests include reading and visiting cafes.