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

1999 08.26	Ani Raji GPX Special CD 99	Talk
2000 03.23	Excel Girls Golden Best 20 (VICL-60546)	Song
2000 08.23	Hand Maid May Soundtrack meippai (VICL-60597)	Song
2000 09.21	Hand Maid May Non Scramble CD Drama (VICL-60611)	Talk
2000 10.21	Hand Maid May 6/6 Chara Meippai (VICL-60622)	Song
2000 11.22	Hand Maid May -Mou Ippai Ippai- ()	Talk
2000 11.22	Hand Maid May Drama CD Senshuu Meippai Joukan (VICL-60612)	Talk
2000 12.16	Hand Maid May Drama CD Senshuu Meippai Gekan (VICL-60676)	Talk
2001 02.21	Gear Senshi Dendou File 1 C-DRIVE Debut (VICL-60691)	Talk
2002 01.23	Seiyuu Best Talk Collection (SCDC-001544-001545)	Talk
2003 08.20	Omoide ni Kawaru Kimi -Memories Off- Vocal Collection (SCDC-287)	Song
2003 09.18	Omoide ni Kawaru Kimi -Memories Off- Drama Best (SCDC-309)	Talk
2005 04.06	Mahoushoujo Lyrical Nanoha Sound Stage 03 (KICA-668)	Talk
2005 11.23	Mahou Shoujo Lyrical Nanoha A's Sound Stage 01 (KICA-733)	Talk
2007 08.08	Idol Master Xenoglossia Drama CD Vol. 2 (LACA-5673)	Talk
2007 11.07	Idol Master Xenoglossia Drama CD Vol. 3 (LACA-5706)	Talk
2007 12.12	Mahou Shoujo Lyrical Nanoha StrikerS Sound Stage 5 (KICA-856)	Song/Talk
2008 03.07	Hayate no Gotoku! Drama CD 2 (GNCA-1121)	Talk
2008 03.21	Hayate no Gotoku! Drama CD 3 (GNCA-1122)	Talk
2009 03.06	Hayate the Combat Butler Character Cover CD (GNCA-1179)	Song
2009 06.24	Hayate the Combat Butler! Live 2009 (GNCA-1229)	Song/Talk
2009 08.26	Hayate the Combat Butler! Character CD 2nd Series 05 (GNCA-1225)	Song/Talk
2009 08.26	Hayate the Combat Butler! Character CD 2nd Series 06 (GNCA-1226)	Talk
2010 03.25	Queen's Blade Vocal Collection (ZMCZ-4660)	Song
2010 04.28	To Aru Kagaku no Railgun Archives 2 (GNCA-1254)	Talk
2011 08.24	Dog Days Drama Box Vol.1 (SVXC-7788)	Talk
2013 07.31	Hayate no Gotoku! Cuties Ending and Heroine Soundtrack 2 (GNCA-1382)	Song
2017 05.17	GirlFriend Character Song Series Vol.05 (PCCG-1595)	Song