Junko Iwao is a veteran Japanese voice actress and singer born on February 18, 1970, in Beppu, Oita, Japan. She began her entertainment career as a member of the female idol group Saint 4 before transitioning to voice acting, where she established herself as a prominent talent in the anime industry during the 1990s and beyond. She is affiliated with her own agency, J. Island, which she founded in 2005.

Iwao is widely recognized for several iconic roles that have defined her career. Her most celebrated performance is as Tomoyo Daidouji in the beloved series Cardcaptor Sakura, a role she has reprised for numerous sequels and films, including the 2018 series Cardcaptor Sakura: Clear Card. She also delivered a critically acclaimed performance as Mima Kirigoe in the psychological thriller film Perfect Blue. Other significant anime roles include Kotori Monou in X, Hikari Horaki in Neon Genesis Evangelion, Tomoe Yukishiro in Samurai X: Trust & Betrayal, Ceres in Ceres, Celestial Legend, Jun Fudo in Devil Lady, and Kikyo Zoldyck in Hunter x Hunter.

In addition to her work in television and film, Iwao has an extensive portfolio in original video animations and video games. Notably, she voices Pai Chan in the Virtua Fighter series, Mint Adnade in Tales of Phantasia, and Serika Kurusugawa in To Heart, a role she also played in the series' anime adaptations. The user's query references many of these roles, including Hennessy and Sally in Macross 7 Plus, Kazuko Saotome in Puella Magi Madoka Magica, and Akane Aikawa in Magic User's Club, all of which are confirmed parts of her filmography.

Throughout her long career, Iwao has demonstrated a recurring ability to portray characters who are gentle, kind, or deeply emotional, often serving as a supportive friend or a tragic figure. Her voice work in Perfect Blue, however, shows a powerful range into darker, more complex psychological territory. Her collaborations span numerous studios and directors, reflecting her status as a reliable and versatile performer.

In recognition of her lasting contributions to the voice acting profession, Junko Iwao was honored with the Kazue Takahashi Award at the 16th Seiyu Awards in 2022.