| Diamond | |
| Type: | Album |
| Artist: | 12012 |
| Cover: | 12012-Diamond.jpg |
| Caption: | Special edition cover |
| Released: | December 12, 2007 |
| Length: | Special – 50:20 Regular – 53:14 |
| Language: | Japanese |
| Label: | Universal Music |
| Chronology: | 12012 Albums |
| Prev Title: | Not Obtain+1 / Play Dolls |
| Prev Year: | 2006 |
| Next Title: | Mar Maroon |
| Next Year: | 2009 |
Diamond is a full-length album from 12012. The album was their major label debut, after their move to Universal Music. The album is available in two editions, a regular and special edition; the regular containing a bonus track and the special, a DVD featuring making-of footage, the music video for "Diamond", as well as live footage and a promotional poster.