Petos
- taona: 1988
- Firenena: Finland
- Genre: Drama, Crime
- Studio: National-Filmi
- Keyword: prison, suicide, robbery, police, gangster, based on true story, based on play or musical, wedding
- tale: Taavi Kassila
- Cast: Paavo Pentikäinen, Eeva Litmanen, Martti Tschokkinen, Carl-Kristian Rundman, Pekka Räty, Harri Hyttinen