Some of the events that Rio has appeared in are as follows.

1995 04.15	Doki Doki Waku Waku Panic Tour in Tokyo
1995 04.23	Princess Minerva in Tokyo
1996 08.23	Tokyo Game Show '96
1996 08.24	Tokyo Game Show '96
1997 05.10	Dai Undoukai event in Osaka
1997 05.11	Dai Undoukai event in Tokyo
1997 05.17	Dai Undoukai event in Kobe
1997 05.18	Dai Undoukai event in Tokyo
1997 05.24	Dai Undoukai event in Nagoya
1997 05.31	Orikasa Ai's Moonlight Cafe
1997 09.07	Tokyo Game Show 97 Autumn
1998 02.07	Radio ROM event at Animate Akihabara
1998 02.14	Natsuki Rio first album event in Ishimaru Soft One
1998 02.15	Natsuki Rio first album event in Nagoya
1998 02.21	El Hazard showing and talk event
1998 02.22	Natsuki Rio first album event in Sendai
1998 07.12	Pioneer LDC Matsuri Summer in Fukuoka
1998 07.19	Pioneer LDC Matsuri Summer in Osaka
1998 07.20	Pioneer LDC Matsuri Summer in Nagoya
1998 07.25	Pioneer LDC Matsuri Summer in Sapporo
1998 07.26	Pioneer LDC Matsuri Summer in Sapporo
1998 08.09	Pioneer LDC Matsuri Summer in Sapporo
1998 08.16	Radio Rom Lunch event
1998 08.23	2nd Ani Raji Festival
1998 10.10	Tokyo Game Show Autumn 1998
1998 10.11	Tokyo Game Show Autumn 1998
1998 11.23	Natsuki Rio talk and live in Koudaisai 98
1999 01.17	Radio ROM Last event in T-Zone Shinjuku
1999 02.07	Idol and Anime Card Festival 99
1999 12.24	Minnade Utaou! Christmas
2000 01.23	AIC Bishoujo Animation Cel Work event talk show
2000 02.11	At Hot Legs live
2000 08.05	Natsuki Rio Asakawa Yuu live "Second Stage"
2001 02.11	World Hobby Festival Ariake 4
2001 07.08	Mayuta and Stages
2001 07.22	AIC Bishoujo Animation Cel Art Ten in Sendai
2001 09.09	4th Stages
2001 12.09	Special Live in Area Takadanobaba
2002 08.11	Toho Gakuen Housou Seiyuu Ka Taiken Nyuugaku
2002 10.13	[14:00] Seesonic Lavel CD event
2002 10.14	Seesonic Lavel 2 CD mini live in TB Hall
2002 10.20	8th Stage in Astro Hall
2011 04.09	[13:20] Iwao Junko no Sweet Tweet Time