Naoko Matsui is an old-timer voice actor from Hokkaido. She had a tendency to voice {{Action Girl}}s or roles bordering on TheScrappy level. Her most notorious roles include the RichBitch Dorothy from ''GundamWing'', Roux Louka from ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]'', Katsumi from ''SilentMoebius'', Sonoko from ''DetectiveConan'' and Naomi from ''Manga/DeathNote''.

Said to have a [[RelationshipVoiceActor voice actor relationship]] with AkikoYajima. Formerly married to KenyuuHoriuchi; their marriage didn't work, but they're still best friends.
!!Notable roles by Naoko Matsui
* Akane from ''KimagureOrangeRoad''
* Azusa Shiratori from ''Manga/RanmaOneHalf''
* Queen Corellia in ''VideoGame/BatenKaitos''
* Dorothy Catalonia from ''[[Anime/MobileSuitGundamWing Gundam Wing]]''
* Gadget in the Japanese dub of ''WesternAnimation/ChipNDaleRescueRangers''
* Inez Fressange from ''MartianSuccessorNadesico''
* [[AttackOfTheFiftyFootWhatever Kali Yuga]] in ''VideoGame/SuperRobotWarsUX''
* Katsumi Liqueur from ''SilentMoebius''
* Koyomi from ''DCDaCapo''
* Leska from ''NGKnightLamune40'' and ''VideoGame/SuperRobotWarsNEO''
* Monet in ''Anime/OnePiece''
* Naomi Misora from ''Manga/DeathNote''
* Rabby (as well as her [[IdenticalGrandson identical descendants]]) in the ''GallForce'' series
* Ran Kocho from ''Anime/YuGiOhGX''
* Roux Louka from ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]''
* Rem Ayanokouji from ''Anime/DreamHunterRem'' and ''VideoGame/SuperHeroineChronicle''
* Sam from the Japanese dub of ''WesternAnimation/TotallySpies''
* Sonoko Suzuki from ''Manga/DetectiveConan''