Okiayu Ryoutarou CDs (miscellaneous)
Ryoutarou appears (sings/talks) in the following miscellaneous CDs.
| 1992.06.25 | Cyber Formula Rei View 1 Maku (PSCX-1048) | Song |
| 1994.08.21 | Marmalade Boy Vol. 2 | Talk {14} |
| 1994.09.21 | Marmalade Boy Vol. 3 Marmalade Voice | Song {3} |
| 1994.10.01 | Seirei Tsukai Mega D Style (SRCL-3009) | Talk |
| 1994.11.23 | 94 Seiyuu Song Festival | Song |
| 1995.03.08 | Rockman Kiki Ippatsu Drama | Talk |
| 1995.03.17 | Seiyuu Daisuki 2 (MRCA-20058) | Talk |
| 1995.04.29 | Eiyuu Densetsu III -Shiroki Majo- Kenketsu Hen (KICA-1159) | Talk |
| 1995.06.21 | Scandalous Actor Performance (AFCP-2002) | Talk |
| 1995.07.21 | Jinkousehouseiki Izanagi (AFCP-2006) | Talk |
| 1995.09.21 | Jinnai no Sekai (PICA-1074) | Song/Talk |
| 1995.09.21 | Sotsugyou Crossworld "Sotsugyou M" (COCC-12878) | Talk |
| 1995.10.25 | Popful Mail Paradise 5 (KICA-1169) | Talk {Blacky} |
| 1995.11.05 | Marmalade Boy Vol. 8 | Song |
| 1995.12.13 | Cutey Tenshi Chougouka Yume no Saiten (TYCY-5461) | Talk |
| 1995.12.21 | El Hazard TV volume 1 (PICA-1082) | Talk |
| 1995.12.21 | Tokyo Denki Kirakira Gasshoudan The Heros (TDCD-1123) | Song |
| 1996.01.20 | Girl (COCC-18105) | Song |
| 1996.02.21 | Ryuu Night CD Cinema 3 (VICL-8168) | Talk |
| 1996.03.05 | I Love You (AYCM-507) | Talk |
| 1996.03.23 | Gundam W Operation 4 (KICA-295) | Song |
| 1996.03.23 | Mobile Suit Gundam Wing Operation 4 (KICA-295) | Song |
| 1996.07.24 | Radio no Sekai El Hazard CD Special (PICA-1103) | Talk |
| 1996.09.21 | Ja Ja Uma Quartet Operation 1 (BVCH-1407) | Talk |
| 1996.10.23 | Souryuuden I Chounouryoku 4 Kyoudai (KICA-7011-7012) | Talk |
| 1996.12.21 | Oretachi ni Makasero! (COCC-13982) | Talk |
| 1997.01.10 | E.M.U. Equal (COCC-14020) | Song |
| 1997.01.21 | Oretachi ni Makasero! volume 2 (COCC-14019) | Talk |
| 1997.03.20 | E.M.U. Equal Live Tour (COCC-14053-14054) | Song |
| 1997.04.19 | Oretachi ni Makasero! volume 3 (COCC-14159) | Talk |
| 1997.04.23 | Kidou Senkan Nadesico Asu no Kanchou ha Kimi da! (KICA-345) | Song |
| 1997.06.21 | Cyber Formula SAGA Inspire vol 1 (AYCM-571) | Song |
| 1997.08.26 | Elfin Paradise (BVCH-742) | Talk |
| 1997.09.01 | Seikimatsu Darling III (MMCM-3002) | Talk |
| 1997.10.21 | Fortune Quest drama collection 2 (AYCM-581) | Talk |
| 1997.10.21 | Oretachi ni Makasero! volume 4 (COCC-14581) | Talk |
| 1997.10.21 | Weiss kreuz dramatic collection 1 (MMCM-1003) | Talk |
| 1997.10.22 | Calm Breaker (KICA-375-6) | Talk |
| 1997.10.25 | Kimi Dake wo Mitsumeteru (AMCM-4342) | Talk |
| 1997.11.06 | Android Anna Maico-2010 3 (KICA-7811) | Talk |
| 1997.11.21 | Mega Blade (KICA-1202) | Talk |
| 1997.12.20 | Hyper Anna (COCC-14738) | Talk |
| 1997.12.21 | Megami Ibunroku Persona (KECH-1121) | Talk |
| 1998.01.21 | Sotsugyou M Drama Collection (COCC-14774) | Talk |
| 1998.02.05 | Guy Brave radio drama CD vol 1 (AZCV-2001) | Talk |
| 1998.03.05 | Guy Brave radio drama CD vol 2 (AZCV-2002) | Talk |
| 1998.03.05 | Kizuna (MMCM-3004) | Talk |
| 1998.04.03 | Burn Up Excess Plus file 4 (KICA-7829) | Talk |
| 1998.04.03 | Hanasaki Komachi Girls (KICA-399) | Talk |
| 1998.04.05 | Guy Brave radio drama CD vol 3 (AZCV-2003) | Talk |
| 1998.04.21 | Tokyo Crazy Paradise (MMCM-4002) | Talk |
| 1998.04.29 | Yuukyuu Gensoukyoku 2nd Album drama CD vol 2 (PCCB-313) | Talk |
| 1998.08.21 | E.M.U. the Remix (COCX-30008) | Song |
| 1998.10.01 | E.M.U. the Best (COCX-30061) | Song |
| 1998.11.06 | High School Aura Buster 1st Vision (KICA-420) | Talk |
| 1998.12.06 | Gekka Kajin: Lumen Lunae (WIN-0006) | Talk |
| 1998.12.19 | Sotsugyou M Song Collection (COCX-30225) | Song |
| 1999.01.06 | High School Aura Buster 2nd Vision (KICA-436) | Talk |
| 1999.02.03 | Yuukyuu Gensoukyoku ensemble drama CD 1 (PCCB-356) | Talk |
| 1999.03.03 | Yuukyuu Gensoukyoku ensemble drama CD 2 (PCCB-362) | Talk |
| 1999.08.25 | Houshin Engi Level-I (KECH-1152) | Talk |
| 1999.09.25 | Barbarian Quartetto Volume 1 (MACA-2012) | Talk |
| 1999.10.20 | Houshin Engi Level-II (KECH-1153) | Talk |
| 1999.10.27 | Barbarian Quartetto Volume 2 (MACA-2013) | Talk |
| 1999.11.17 | Yuukyuu Gensoukyoku Collection 4 Colors (PCCB-400) | Song/Talk |
| 1999.11.24 | Barbarian Quartetto Volume 3 (MACA-2014) | Talk |
| 1999.12.10 | Houshin Engi Level-III (KECH-1154) | Talk |
| 2000.02.00 | High School Aura Buster Himitsu no Tekken! Special CD (8SSX122) | Talk |
| 2000.02.25 | Nadesico Oshare Club (KICA-490) | Song |
| 2000.03.17 | Yuukyuu Ongakusai Drama hen (PCCB-409) | Talk |
| 2000.03.23 | West End Volume 2 (MMCC-3705) | Talk |
| 2000.04.21 | E.M.U. Memorial Box (COCX-30832--COCX-30836) | Song |
| 2000.07.28 | DiGi Charat CD Drama so nyo 4 (GCFC-008) | Talk |
| 2000.09.20 | Yuukyuu Kumikyoku All Start Project drama CD 1 (SCDC-00039) | Talk |
| 2000.09.22 | Tokyo Jusshouden drama CD Maou no Shinzou zenpen (PICL-7018) | Talk |
| 2000.10.12 | Minna de Tsukuru Yuukyuu CD! (SCDC-00033) | Talk |
| 2000.10.18 | Yuukyuu Final Concert (SCDC-00048) | Skit |
| 2000.10.25 | Clamp Gakuen Kaiki Genshou Kenkyuukai Jiken File 1 (MMCC-4011) | Talk |
| 2000.10.25 | Tokyo Jusshouden drama CD Maou no Shinzou kouhen (PICL-7019) | Talk |
| 2000.11.22 | Clamp Gakuen Kaiki Genshou Kenkyuukai Jiken File 2 (MMCC-4012) | Talk |
| 2000.12.02 | Welcome to X'mas (GCFC-013) | Song |
| 2000.12.20 | Clamp Gakuen Kaiki Genshou Kenkyuukai Strike Sparks () | Song {track 1, 3} |
| 2001.04.25 | Super Robot Taisen alpha Gaiden (LACA-5032) | Talk |
| 2003.08.21 | D.N.Angel CD drama D.X.Angel Cute (VICL-61142) | Talk |
| 2003.10.01 | D.N.Angel CD drama 2 (VICL-61144) | Talk |
| 2003.10.22 | D.N.Angel Vocal Collection (VICL-61145) | Song |
| 2004.07.23 | Beast of East (MMCC-4057) | Talk |
| 2005.05.25 | Fruits Basket (MMCC-7037) | Talk |
| 2005.09.22 | Mamotte Shugogetten! Retrouvailles Drama CD 3 (FCCC-39) | Talk |
| 2005.10.21 | Air Drama CD vol 5 Kirishima Kano Dream Kouhen (FCCP-13) | Talk |
| 2006.03.10 | Tales of Destiny Chijou-hen (FCCT-9003) | Talk |
| 2007.04.25 | Drama CD CLANNAD vol 1 Furukawa Nagisa (FCCP-0024) | Talk |