| Gianizm | |
| Type: | Album |
| Artist: | Nightmare |
| Cover: | Gianizm 2010 Cover.jpg |
| Longtype: | and compilation album |
| Released: | January 1, 2010 |
| Label: | VAP |
| Producer: | Nightmare |
| Prev Title: | Majestical Parade |
| Prev Year: | 2009 |
| Next Title: | Historical ~The Highest Nightmare~ |
| Next Year: | 2010 |
is one of Nightmare's 10th anniversary albums, released on January 1, 2010.[1] Two different versions were released. One containing only a CD, and the other containing a CD+DVD. The album is a compilation of all the "Gianizm" tracks, including two new Gianizm tracks never before released. All tracks have been re-recorded for the album, excluding Shichi, Hachi, and Kyuu. The DVD included with the limited edition contains a video for each track. The album peaked at #19 in the Oricon chart,[2] selling 18,201 copies in the first week (20,914 total reported sales).