Some of the events that Mariko has appeared in during the year 2003 are as follows.

2003 03.22	[18:30] Kouda Mariko Concert 2003 in Kawaguchi Riria Hall
2003 03.30	[18:00] Kouda Mariko Concert 2003 in Nanba Hatch
2003 04.05	[18:30] Kouda Mariko Concert 2003 in Nakano Sun Plaza
2003 05.25	[15:00/17:00] Happy Site Special public recording
2003 09.06	[13:00] Aozora de Aishiteru in Hibiya Yagai Ongakudou
2003 10.11	[16:00] Kouda Mariko no GM 10 Shuunen Chokuzensai in Tokyo
2003 11.29	[18:00] Kouda Mariko Concert Acoustic Nights in Nagoya
2003 11.30	[17:30] Kouda Mariko Concert Acoustic Nights in Osaka