Sumi Shimamoto (December 8, 1954 ), is a prolific veteran Japanese voice actress who has been active since the late 1970's. She's probably best known for her multiple collaborations with Hayao Miyazaki, who cast her as the heroine in several of his early projects. She happens to be the voice acting originator of the Yamato Nadeshiko archetype (later perfected by Kikuko Inoue), but also played a few action girls back in the day. Since the 80's, she has most often been cast as mothers to main characters.
She married Daisuke Koshikawa, a member of a comedy troupe called Chibikko Gang, in 1984. She apparently loves playing RPG games (and not just the ones she's in) despite now being over 60.
Voice actress Shiori Koshikawa, who played minor roles in the Anpanman anime series, is Shimamoto's only child.
- Anek in Porphy no Nagai Tabi
- Annette and Eriza in Sword of the Berserk: Guts' Rage
- Catherine Tramell (Sharon Stone) in the Nippon TV Japanese dub of Basic Instinct
- Asuka Mizunokuji in Urusei Yatsura
- Clarisse in The Castle of Cagliostro
- Cosmos in Dissidia Final Fantasy
- Dorothy in The Wonderful Wizard of Oz
- Elice in the Fire Emblem OVA and Fire Emblem Heroes
- Fillyjonk in Tanoshii Moomin Ikka
- Flora in Berserk: Millennium Falcon Hen Seima Senki no Shō and Berserk and the Band of the Hawk
- GinRei in Giant Robo
- Pulls triple duty as the Gofer sisters, Irene, and Operetta in Otomedius
- Isis (Ishizu) Ishtar in Yu-Gi-Oh!
- Princess Ixquic in the Cyborg 009 2001 series.
- Kanata Izumi in Lucky Star
- Kasumi Sumadera in Umineko: When They Cry (PS3 game only; in the anime she is voiced by Atsuko Tanaka)
- Kyoko Otonashi in Maison Ikkoku
- Princess Leia in the Japanese dub of the original Star Wars trilogy
- Mitsuba Okita in Gintama
- Marguerite Châteaubriand in Sakura Wars 2: Thou Shalt Not Die
- Miyako Shiba in Bleach
- Moeran in Fractale
- Mutsumi Hoshikawa in The☆Ultraman (her first role as a regular cast member)
- Nagi in Fire Emblem Heroes
- Princess Nausicaa in Nausicaä of the Valley of the Wind
- Rei "Hana no Saint-Juste" Asaka from Dear Brother
- Princess Romina in Ninja Senshi Tobikage
- Ryō Nagare in Getter Robo Arc
- Sarah Crewe in Princess Sarah
- Shokupan-man in Soreike Anpanman (Definitely Playing Against Type and Cross-Dressing Voices as well!)
- Tae Sekihara in Rurouni Kenshin
- Toki in Princess Mononoke
- Lady Vishnu in Legend of Heavenly Sphere Shurato
- Yukiko Kudo in Case Closed
- Yuuko Asou in Mugen Senshi Valis