Arimasa Osawa | |
|---|---|
| Born | 8 March 1956 Nagoya, Japan |
| Occupation | Writer |
| Language | Japanese |
| Period | 1978–present |
| Genre | Hardboiled, crime fiction, thriller |
| Notable awards | Mystery Writers of Japan Award (1991) Naoki Prize (1993) |
| Website | |
| www | |
Arimasa Osawa (大沢在昌, Ōsawa Arimasa, born 8 March 1956) is a Japanese writer of hardboiled fiction and thrillers. He served as the 12th President of the Mystery Writers of Japan from 2005 to 2009.