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

1990 08.21	Tengai Makyou (VICL-54)	Song
1990 11.21	Everybody's Christmas	Song
1990 11.25	Seiyuu Graffiti	Song
1992 10.28	92 Seiyuu Graffiti	Song
1993 06.20	Aa Megami-sama Tokuten-ou	Talk
1996 02.16	Golden Boy Study a Go! Go! (JSCA-29032)	Song
1996 05.22	Boku no Marie Wars CD Cinema 1 (VICL-8190)	Talk
1997 07.24	Happy Boy radio anime vol 1 (WDCD-28009)	Talk
1997 10.21	Janjan Koishimasho (MMCM-5001)	Talk
1997 10.22	True Love Story drama CD vol. 4 (WDCD-28015)	Talk
1997 11.10	Seiyuu Grand Prix Special CD 97	Talk
1998 02.01	Angelique Kiss Kiss Kiss (KECH-1124-1125)	Song
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 04.05	Guy Brave radio drama CD vol 3 (AZCV-2003)	Talk
1998 09.23	Oh Chin Chin ()	Song
1999 03.26	Zutuki Shoten Mondaisaku ()	Talk
1999 07.07	Sensei no Ojikan 1 Jikanme (AVCT-15004)	Talk
1999 08.04	Sensei no Ojikan 2 Jikanme (AVCT-15009)	Talk
1999 08.26	Ani Raji GPX Special CD 99	Talk
2000 08.23	The King of Fighters 2000 (SCDC-035)	Talk
2000 12.20	Ah! Megami-sama! Tokuten-oh+ (PCCG-559)	Talk
2001 03.07	Sensei no Ojikan 10 Jikanme ()	Talk
2001 06.27	Otasasa TV disk 1 (MMCC-0021)	Talk/Song
2001 07.20	Otasasa TV disk 2 (MMCC-0022)	Talk/Song
2002 01.23	Seiyuu Best Talk Collection (SCDC-00153)	Talk
2003 09.18	Omoide ni Kawaru Kimi -Memories Off- Drama Best (SCDC-309)	Talk
2008 04.24	Splendide Shana Vol 2 (GNCA-1155)	Talk
2008 05.23	Splendide Shana Vol 3 (GNCA-1156)	Talk
2011 02.09	Kore ha Zombie Desuka? Drama CD (VTCL-60237)	Talk