Naoko Matsui (松井菜桜子 Matsui Naoko , born Naoko Ogawa (小川菜桜子 Ogawa Naoko ), April 4, 1961) is a seiyū from Hakodate, Hokkaido. Matsui was a member of Production Baobab for 20 years before forming her own agency. She is also a voice acting instructor.
Matsui is most notable for the roles of Uru Chie in High School! Kimengumi, Rem Ayanokōji in Dream Hunter Rem, Katsumi Liqueur in Silent Möbius, Chiyoko Wato in The Three-Eyed One, Runrun in Mahōjin Guru Guru, Rabby in Gall Force Eternal Story, Roux Louka in Mobile Suit Gundam ZZ, Dorothy Catalonia in Mobile Suit Gundam Wing, Azusa Shiratori in Ranma ½, Miyako Todaiji in Kamikaze Kaito Jeanne, and Sonoko Suzuki in Detective Conan.
She was once married to fellow voice actor Kenyu Horiuchi but they divorced.
Besides voice acting, Matsui is also a theater actress and co-leader of a theater group. At a younger age, she wanted to become a musical theater actress.
Matsui lives in Tokyo.