Aiko Kusumi is a Japanese voice actress born on May 11, 1983, in Chiba Prefecture, Japan. She is a graduate of the Toho Gakuen College of Drama and Music, where she specialized in theater, providing a strong foundation for her performance career. Kusumi is currently affiliated with the talent agency Production Ace, having moved there in 2023 after a long tenure with Mausu Promotion, which she joined upon her debut in 2008.

Her career began in 2008 with minor roles in television anime such as Kannagi. In the years following her debut, she built a portfolio of supporting roles across a wide range of anime series and video games. Notable anime credits from this period include appearances in Suite PreCure, The Idolm@ster, and Fate/Zero. She also contributed her voice to major video game titles, including Final Fantasy XIII. A significant early role was providing the voice for Raisa Pöttgen in the Strike Witches franchise, a character she first played in Strike Witches 2 in 2010 and later reprised for the 2015 original video animation Strike Witches: Operation Victory Arrow Vol. 2. Another prominent anime role was as川原崎加賀美 (Kawaharazaki Kagami) in the acclaimed series Psycho-Pass in 2012.

Beyond anime and games, Kusumi's work is extensive in the field of dubbing, providing Japanese-language voices for numerous foreign films and television dramas. Her versatility in this area is demonstrated by roles in productions ranging from the film The Grey to the TV series The Good Wife and Criminal Minds. She has also voiced characters in animated projects like Dorothy and the Wizard of Oz and Lego Friends.

Kusumi is the daughter of veteran voice actor Naomi Kusumi, making her part of a family legacy in the industry. Her career is marked by a consistent presence across various media, including stage performances and audio books, showcasing her adaptability as a performer.