Voice Artist Artists, Casts, Authors
- Nobuhiko Okamoto
- OKAMOTO NATSUMI
- OHANAMISHU
- OSHITARI KENYA with SHITENHOUJICHU
- OSHITARI KENYA & ZAIZEN HIKARU
- Fumiko Orikasa
- Ai Orikasa
- ONOBAKUDAN
- OUSAKI CHIYO
- OKINO YASUHIRO
- ONSENMUSUME
- Megumi Ogata
- 織姫よぞら&AiAi
- Ryotaro Okiayu
- OKIAYU RYOTARO/MAEDA NOBORU
- Kazuyuki Okitsu
- OGINO KARIN
- OCHI TSUKIMITSU &MORI JUSABUROH(CV:KAWAKAMI TAKAFUMI & NOJIMA KENJI)
- Tomoe Oumi
- Oumi Tomoe
- OHSAKA RYOTA
- O.L.H.
- Kichiemon Otoya
- ONGAKU SHOUJO
- OTORI CHOTAROH with HYOTEIGAKUENCHU
- Mayuko Omimura