Yoko Soumi is a Japanese voice actress.
| Movie | Ogenki Clinic Adventures | Landlady | 2027 |
| Movie | The Birth of Kitaro: The Mystery of GeGeGe | Otome Ryuga (voice) | 2023-11-17 |
| Series | SHAMAN KING | Lyserg Diethel (voice) | 2021-04-01 |
| Movie | Eureka: Eureka Seven Hi-Evolution | Mischa Stravinskaya (voice) | 2021-11-26 |
| Movie | Made in Abyss: Wandering Twilight | Belchero (voice) | 2019-01-18 |
| Movie | Made in Abyss: Journey's Dawn | Belchero (voice) | 2019-01-04 |
| Series | 7SEEDS | Botan Saotome (voice) | 2019-06-28 |
| Movie | Yu Yu Hakusho - Two Shots / All or Nothing | Atsuko Urameshi (voice) | 2018-10-26 |
| Series | Violet Evergarden | Iris' mother | 2018-01-11 |
| Movie | Anemone: Eureka Seven Hi-Evolution | Mischa Stravinskaya (voice) | 2018-11-10 |
| Series | Made in Abyss | Principal (voice) | 2017-07-07 |
| Movie | Pretty Cure All Stars DX2: The Light of Hope - Protect the Rainbow Jewel! | Arachnea (voice) | 2010-03-14 |
| Series | Fullmetal Alchemist: Brotherhood | Olivier Mira Armstrong (voice) | 2009-04-05 |
| Series | Ristorante Paradiso | Vanna (voice) | 2009-04-09 |
| Series | Natsume's Book of Friends | Long Haired One-Eyed Youkai (voice) | 2008-07-08 |
| Series | Yes! PreCure 5 | Arachnea | 2007-02-04 |
| Series | Oh! Edo Rocket | Seikichi Tamaya | 2007-04-03 |
| Series | Tokyo Majin | Takako Iwayama | 2007-01-19 |
| Series | Kodomo no Jikan | Sae Shirai | 2007-10-11 |
| Series | Mononoke | Haru Yamaguchi (voice) | 2007-07-13 |
| Series | Coyote Ragtime Show | Madame Marciano (voice) | 2006-07-04 |
| Movie | Bleach the Movie: Memories of Nobody | Benin (voice) | 2006-12-16 |
| Series | Eureka Seven | Mischa (voice) | 2005-04-17 |
| Series | Fafner | Yukie Kariya | 2004-07-05 |
| Series | Bleach | Unknown | 2004-10-05 |
| Series | Stratos 4 | Miharu Ohzora | 2003-01-05 |
| Series | Chrono Crusade | Rizel | 2003-11-25 |
| Series | Someday's Dreamers | Mage Kawada (voice) | 2003-01-09 |
| Series | Ghost in the Shell: Stand Alone Complex | Kawashima Kaori (voice) | 2002-10-01 |
| Series | Malice@Doll | Amanda@Doll (voice) | 2001-04-27 |
| Series | Earth Maiden Arjuna | Teresa Wong | 2001-01-09 |
| Movie | Malice@Doll | Amanda@Doll (voice) | 2001-04-27 |
| Movie | Vampire Hunter D: Bloodlust | Caroline (voice) | 2001-04-21 |
| Series | The Bizarre Cage | Amano Miyuki (voice) | 2001-04-27 |
| Series | X | Karen Kasumi (voice) | 2001-10-03 |
| Movie | Lupin the Third: Alcatraz Connection | Susan (voice) | 2001-08-03 |
| Series | Shaman King | Lyserg | 2001-07-04 |
| Movie | Inmu: Feast of Victims | 2000-01-21 | |
| Movie | Pokémon 3: The Movie | Reporter (voice) | 2000-07-08 |
| Series | VanDread | Buzam A. Calessa | 2000-10-03 |
| Series | Microman | 1999-01-04 | |
| Series | TRIGUN | Dominique the Cyclops (voice) | 1998-04-02 |
| Movie | Virgin Fleet | Nikola Papulio (voice) | 1998-04-25 |
| Movie | Alien from the Darkness | Captain Sara | 1997-01-24 |
| Series | Speed Racer X | Misuzu Hibiki | 1997-01-09 |
| Series | Revolutionary Girl Utena | Mrs. Ohtori (voice) | 1997-04-02 |
| Series | Battle Athletes | Ayla V. Roznovsky | 1997-05-25 |
| Movie | Dragon Knight: Another Knight on the Town | Shade (voice) | 1995-02-25 |
| Movie | Gunsmith Cats | Natasha Radinov (voice) | 1995-11-01 |
| Series | La Blue Girl | KochÅ (voice) | 1992-06-26 |
| Movie | Porco Rosso | (voice) | 1992-07-18 |