Yamamoto Maria events (1999)
Some of the events that Maria has appeared in during the year 1999 are as follows.
| 1999.01.17 | Kakikuke Kikuko no Sasisuse Sonata public recording |
| 1999.03.21 | Tokyo Game Show Spring 1999 |
| 1999.06.20 | Lu puty La puty Hatsubai Kinen Event at Pony Canyon Honsha |
| 1999.07.10 | Nanako Kaitaishinsho OAV event in Animate Kyoto |
| 1999.07.10 | Nanako Kaitaishinsho OAV event in Hiroshima |
| 1999.07.10 | Nanako Kaitaishinsho OAV event in Nagoya |
| 1999.07.18 | Grand Prix on Stage |
| 1999.07.20 | Nanako Kaitaishinsho event at Ishimaru Soft One |
| 1999.07.20 | Nanako Kaitaishinsho event at Yamagiwa Soft |
| 1999.07.24 | Nanako Kaitaishinsho event at Animate Ikebukuro |
| 1999.07.24 | Nanako Kaitaishinsho event at Yamagiwa Yokohama |
| 1999.07.24 | Tokyo Character Show 1999 |
| 1999.09.05 | Shiawase Croissant talk show in Shinseido Disk Inn |
| 1999.09.18 | Tokyo Game Show 99 Autumn |
| 1999.09.19 | Tokyo Game Show 99 Autumn |
| 1999.10.10 | Maria TV event |
| 1999.10.30 | Yamamoto Maria talk live in Aoyama Gakuin |
| 1999.12.19 | Shiawase Croissant Christmas Live |
| 1999.12.27 | Anime Kouhaku Utagassen |
| 1999.12.27 | Anime Kouhaku Utagassen Uchiage Daihousou Party |