Unknown Man No. 89
First edition  | |
| Author | Elmore Leonard | 
|---|---|
| Language | English | 
| Genre | Crime novel | 
| Publisher | Delacorte Press | 
Publication date  | May 1977 | 
| Publication place | United States | 
| Media type | Print (Hardback) | 
| Pages | 264 pp. | 
| ISBN | 0-440-09216-7 | 
| OCLC | 2425395 | 
| 813/.5/4 | |
| LC Class | PZ4.L58 Un PS3562.E55 | 
| Preceded by | The Big Bounce | 
Unknown Man #89 is a crime novel written by Elmore Leonard, published in 1977, just after his novel Swag, and preceding The Hunted. It is a sequel to The Big Bounce.