| Masami Shiratama | |
| Background: | non_vocal_instrumentalist |
| Alias: | Tama |
| Birth Date: | 27 April 1974 |
| Origin: | Hiroshima, Japan |
| Instrument: | Bass guitar |
| Genre: | Rock, J-pop |
| Occupation: | Musician, lyricist, composer |
| Years Active: | 1999–present |
| Label: | SME Records |
| Associated Acts: | Porno Graffitti |
, better known by his stage name Tama or is a Japanese musician, lyricist and composer from Innoshima and a bass guitarist of Porno Graffitti in September 1999. After leaving the band in June 2004, he released the album Great Pleasure in December 2005.
Great Pleasure (December 21, 2005)