Mariko appears (sings/talks) in the following miscellaneous CDs.

1994 01.21	Twinbee Paradise vol 1 (KICA-7626)	Song/Talk
1994 02.23	Twinbee Paradise vol 2 (KICA-7630)	Song/Talk
1994 03.05	Ginga Ojousama Densetsu Yuna Dainettou (KICA-185)	Talk
1994 03.24	Twinbee Paradise vol 3 (KICA-7633)	Song/Talk
1994 04.21	Twinbee Paradise Nesshou! Vocal Battle Hen (KICA-7636)	Song
1994 04.21	Twinbee Paradise vol 4 (KICA-7635)	Song/Talk
1994 04.25	Dirty Pair Flash Tenshi no Kyuusoku (VPCG-84228)	Song
1994 05.20	Seiyuu Daisuki 1 (MRCA-20037)	Talk
1994 05.25	Twinbee Paradise vol 5 (KICA-7637)	Song/Talk
1994 06.03	CD Drama Tokimeki Memorial (KICA-7640)	Talk/Song
1994 06.22	Twinbee Paradise vol 6 (KICA-7638)	Song/Talk
1994 08.21	Marmalade Boy Vol. 2	Talk {2, 17}
1994 08.24	GS Mikami Gokuraku Daisakusen (KICA-211)	Song/Talk
1994 09.21	Marmalade Boy Vol. 3 Marmalade Voice	Song {2, 4, 5, 7, 12}
1994 11.03	CD Drama Tokimeki Memorial 2 (KICA-7646)	Talk/Song
1994 11.03	Ginga Ojousama Densetsu Yuna Eien no Princess (KICA-218)	Talk
1994 11.21	Marmalade Boy Vol. 4	Talk {1, 8, 21}
1994 12.02	Eiyuu Densetsu III -Shiroki Majo- (KICA-1155)	Talk
1994 12.21	Twinbee Paradise 2 vol 1 (KICA-7648)	Song/Talk
1995 01.21	Twinbee Paradise 2 Nesshou! Gekishou! Bakushou! Hen (KICA-7652)	Song
1995 01.27	MAPS Original Sound Track	Talk
1995 02.03	CD Drama Tokimeki Memorial 3 (KICA-7654)	Talk/Song
1995 02.16	Twinbee Paradise 2 vol 3 (KICA-7655)	Song/Talk
1995 02.21	Marmalade Boy Vol. 5 Marmalade Face	Song {5}
1995 03.17	Seiyuu Daisuki 2 (MRCA-20058)	Talk
1995 04.01	Fushigi no Kuni no Miyuki-chan (SRCL-3193)	Song/Talk
1995 04.01	Fushigi no Kuni no Miyuki-chan (SRDL-3193)	Talk
1995 04.21	GS Mikami Report 1 (KICA-239)	Talk
1995 04.21	Idol Project First Present (JSCA-29015)	Song
1995 04.26	Makeruna! Makendou (DPDX-5046)	Talk
1995 04.29	Eiyuu Densetsu III -Shiroki Majo- Kenketsu Hen (KICA-1159)	Talk
1995 05.21	Marmalade Boy Vol. 6	Song {5}
1995 07.01	Dirty Pair Flash 2 Original Soundtrack (VPCG-84252)	Song
1995 07.21	Eiyuu Densetsu III -Shiroki Majo- (KICA-1163)	Talk {Chris}
1995 07.21	Eiyuu Densetsu III -Shiroki Majo- Wakatareta Mizuumi (KICA-1163)	Talk
1995 07.21	Marmalade Boy Vol. 7 Marmalade Summer	Song {2, 6}
1995 08.23	Twinbee Taisen Puzzle-dama -featuring Meloura-hime-	Song/Talk
1995 09.21	GS Mikami Report 2 (KICA-280)	Talk
1995 10.21	Idol Project Crime Planning (JSCA-29024)	Song/Talk
1995 10.25	Popful Mail Paradise 5 (KICA-1169)	Talk {Kachuusha}
1995 11.05	Marmalade Boy Vol. 8	Song
1995 11.22	Tarako Pappara Paradise (KICA-1170)	Talk
1995 12.06	Kouda Mariko no Radio Canvas Special (KICA-7680)	Talk
1995 12.16	Marmalade Boy Best Album	Song
1995 12.21	GS Mikami Report 3 (KICA-281)	Talk
1995 12.21	Tokimeki Memorial Vocal Best Collection	Song
1996 01.10	Quo Vadis Drama CD Vol 1 (VOCR-5003)	Song/Talk
1996 01.19	Seiyuu Daisuki 4 Wedding Bell	Talk
1996 01.24	Quo Vadis Drama CD Vol 2 (VOCR-5004)	Talk
1996 02.05	Seiyuu Grand Prix CD vol 1 (AYCM-502)	Talk
1996 02.21	Quo Vadis Drama CD Vol 3 (VOCR-5005)	Talk
1996 03.23	Quo Vadis Drama CD Vol 4 (VOCR-5006)	Talk
1996 04.25	Dirty Pair Flash volume 1 (VPCG-84280)	Talk
1996 05.22	Quo Vadis Drama CD Vol 5 (VOCR-5008)	Talk
1996 05.24	Idol Project Second Stage (JSCA-29038)	Song
1996 06.01	Dirty Pair Flash volume 2 (VPCG-84281)	Song/Talk
1996.06.??	Quo Vadis Drama CD Vol 6 (VOCR-5009)	Talk
1996 07.01	Dirty Pair Flash volume 3 (VPCG-84282)	Talk
1996 07.24	Doki Doki Pretty League Radio Stadium First Base (PICA-1105)	Talk
1996 08.28	Doki Doki Pretty League Radio Stadium Second Base (PICA-1108)	Talk
1996 09.01	Dirty Pair Flash Vocal Best Collection (VPCG-84268)	Song
1996 09.05	Gekkan Tokimeki Memorial 2 (KICA-7712)	Talk
1996 09.25	Doki Doki Pretty League Radio Stadium Third Base (PICA-1109)	Talk
1996 10.02	Fist (PCCB-226)	Talk
1996 10.02	Gekkan Tokimeki Memorial 3 (KICA-7713)	Talk
1996 10.21	Doki Doki Pretty League Radio Stadium Home Plate (PICA-1115)	Talk
1996 11.01	Gekkan Tokimeki Memorial 4 (KICA-7714)	Talk
1996 12.21	Falcom Special Box '97 (KICA-9029-9031)	Talk
1997 01.01	Gekkan Tokimeki Memorial 6 (KICA-7716)	Talk
1997 01.18	Cross Romance (PCCB-245)	Talk
1997 02.21	Doki Doki Pretty League Radio Enchousen "Tokkunhen" (PICA-1128)	Talk
1997 03.26	Doki Doki Pretty League Radio Enchousen "Ren'aihen" (PICA-1132)	Talk
1997 06.04	Konami All Star Festa 97 (KICA-7766-7767)	Song
1997 08.26	Elfin Paradise (BVCH-742)	Talk
1997 10.00	Yorinuki Kouda Karuta (AnimeV present)	Talk
1997 11.10	Seiyuu Grand Prix Special CD 97	Talk/radio CM
1998 01.21	Pocket Love Angel Voice Memorial vol. 1 (PSCA-10027)	Talk
1998 03.11	Love Letter vol. 3 (CRCP-15523)	Talk
1998 10.28	Idol Project New Dream (KLCA-2003)	Song
1998 11.26	Idol Project REMIX Dance Dance Dance (KLCA-2006)	Song
1999 03.26	Heaven 2 Moon (AZCA-10020)	Talk
1999 08.26	Ani Raji GPX Special CD 99	Talk
2000 04.28	Denshin Mamotte Shugogetten (MACM-1097)	Talk
2000 07.29	Denshi Mamotte Shugogetten Vocal & Soundtrack CD ()	Song
2000 09.29	Kanon volume 1 (MACB-6001)	Talk
2000 10.27	Kanon volume 2 (MACB-6002)	Talk
2001 01.26	Kanon volume 3 (MACB-6003)	Talk
2001 03.30	Kanon volume 4 (MACB-6004)	Talk
2001 04.27	Kanon volume 5 (MACB-6005)	Talk
2001 06.30	Denshin Mamotte Shugogetten DJ CD 2 (MACM-1135)	Talk
2001 08.25	Denshin Mamotte Shugogetten drama CD 8 (MACM-1129)	Talk
2001 10.03	Chance Triangle Session Vocal Album (AVCA-14227)	Song
2001 12.29	Denshin Mamotte Shugogetten DJ CD 3 (MACM-1136)	Talk
2002 12.04	Sora no Teno hira (KICM-1062)	Song
2004 04.28	Mahou Sensei Negima Mahora Gakuen Chuutoubu 2-A 1 Gakki (KICA-639)	Song
2004 07.28	Can_Drops [Drops] (KICA-646)	Song
2004 08.25	Mahou Sensei Negima Mahora Gakuen Chuutoubu 2-A 2 Gakki (KICA-650)	Song
2005 09.22	Mamotte Shugogetten! Retrouvailles Drama CD 3 (FCCC-39)	Talk
2010 01.22	Drama CD P.S. Three-san Vol.2 (HBDC-078)	Talk
2010 12.24	Drama CD Haiyore! Nyaruko-san DX (HBDC-085)	Talk
2011 05.25	Drama CD Haiyore! Nyaruko-san GX (HBDC-092)	Talk
2012 08.01	Jashinkyoku Tachi (AVCA-49837)	Song
2022 02.16	Princess Connect Re:Dive Character Song Album Vol.3 (COCX-41718)	Song