Kobayashi Yumiko roles
Anime
Yumiko has done the following roles in anime.
| Angel Beats [2010] | Ooyama |
| Basquash [2009] | Belle Lindon |
| Beast Wars II | Lio Junior |
| Crayon Shin-chan | Nohara Shinnosuke |
| Duel Masters VSR [2015] | Kirifuda Shouta |
| Excel Saga | Kobayashi Excel |
| GadGuard | young Hajiki |
| Gantz | Sugiwara Ryota |
| Hoozuki no Reitetsu [2014] | Shiro |
| Hoozuki no Reitetsu Dai 2 Ki [2017] | Shiro |
| Inuyasha [2000] {Episode 80} | Bun |
| Kaitou Joker [2014] | Hachi |
| Kami-sama Dolls [2011] | Hyuuga Kirio |
| Love Hina [2000] | Sara MacDougal |
| Love Hina Again [2002] | Sara MacDougal |
| Love Hina Spring Special [2001] | Sara MacDougal |
| Melody of Oblivion | Andou Yousui |
| Nightwalker | female student |
| Peace Maker Kurogane [2003-2004] | Ichimura Tetsunosuke |
| Puni Puni Poemii [2001] | Watanabe Poemi |
| Shakugan no Shana II [2007-2008] | Ogata Matake |
| Shakugan no Shana III [2011-2012] | Ogata Matake |
| Sister Princess [2001] | Mamoru |
| Sister Princess Re Pure [2002] | Mamoru |
| Tennis no Oujisama | Dan Taichi |
| Uchuu Kaizoku Mito no Daibouken 2 | Nenga Masatsuki |
| Uchuu Kaizoku Mito no Daibouken [1999] | Nenga Masatsuki |
| Yakitate Japan | Azuma Kazuma |
Games
Yumiko has done the following roles in games.
| Irregular Hunter X [PSP] | navi voice |
| Kanojo no Rireki [Win95/98] | Sakurano Nagisa |
| Love Hina Gorgeous -Chiratto Happening- [Playstation 2] | Sara |
| Luminous Arc 2 Will [NDS] | Sati |
| Sister Princess [Playstation] | Mamoru |
| Tokimeki Memorial Girl's Side 2nd Kiss [PlayStation 2] | ? |
| Tokimeki Memorial Girl's Side 2nd Season [NDS] | ? |