Natsuki Rio CDs (miscellaneous)
Rio appears (sings/talks) in the following miscellaneous CDs.
| 1995.03.22 | Shinpi no Sekai El Hazard Ongakuhen (PICA-1053) | Talk |
| 1995.03.24 | Macross 7 Docking Festival -Uta ha ginga wo sukuu- (VICL-575) | Talk |
| 1995.09.21 | Jinnai no Sekai (PICA-1074) | Song/Talk |
| 1995.12.21 | El Hazard TV volume 1 (PICA-1082) | Talk |
| 1996.01.24 | Macross 7 CD Cinema 3 Galaxy Song Battle 1 (VICL-740) | Talk |
| 1996.03.06 | Macross 7 CD Cinema 4 Galaxy Song Battle 2 (VICL-741) | Talk |
| 1996.04.03 | Macross 7 CD Cinema 5 Galaxy Song Bettle 3 (VICL-742) | Talk |
| 1996.05.10 | El Hazard TV volume 2 (PICA-1100) | Talk |
| 1996.07.24 | Radio no Sekai El Hazard CD Special (PICA-1103) | Talk |
| 1996.09.21 | Macross 7 Trash (VICL-802) | Talk |
| 1997.01.29 | Battle Athletes Dai Undoukai (PICA-1125) | Talk |
| 1998.02.25 | Man'youshuu Kuro (PICA-1163) | Song |
| 1998.05.22 | Desire (KICA-1212) | Talk |
| 1999.02.26 | Daiundoukai GTO Original Drama (AZCA-10019) | Talk |
| 1999.03.20 | Bubblegum Crisis 2040 Collector's File 1999 (VICL-60239) | Song |
| 2001.03.07 | Pia Carrot he Youkoso! 2 DX Drama CD () | Talk |
| 2003.10.24 | Cinematic Sound Drama GetBackers -Divine Revelation- (MKC-0001) | Talk |
| 2004.02.14 | Cinematic Sound Drama GetBackers -The Place of a God's Death- (MKC-0002) | Talk |
| 2005.01.31 | Cinematic Sound Drama GetBackers -Legend of Vampire- (MKC-0003) | Talk |
| 2005.03.25 | Cinematic Sound Drama GetBackers -Beast Howling- (MKC-0004) | Talk |
| 2005.11.23 | To Heart 2 Character Songs (KICA-1380) | Song/Talk |
| 2006.01.31 | Cinematic Sound Drama GetBackers -Bug's Karma- (MKC-0009) | Talk |
| 2006.08.31 | Cinematic Sound Drama GetBackers -The Origin- (MKC-0010) | Talk |