| Masatoshi Mashima 真島 昌利 | |
| Background: | solo_singer |
| Birth Date: | 20 February 1962 |
| Birth Place: | Hino, Tokyo, Japan |
| Instrument: | Guitar, vocals |
| Genre: | Punk rock |
| Occupation: | Musician, songwriter |
| Years Active: | 1978 - present |
| Label: | BMG Japan |
| Associated Acts: | The Blue Hearts The High-Lows The Cro-Magnons |
is a guitarist who has performed with Japanese rock bands such as The Blue Hearts, The High-Lows and The Cro-Magnons.[1] He was born in Hino and raised in Kodaira in Tokyo, Japan.
His nickname while playing was "Mashi."[2]