Diary of a Telephone Operator
| Certo certissimo... anzi probabile | |
|---|---|
| Directed by | Marcello Fondato | 
| Written by | Dacia Maraini | 
| Starring | Claudia Cardinale | 
| Cinematography | Alfio Contini | 
| Music by | Carlo Rustichelli | 
Release date  | 
  | 
Running time  | 120 minutes | 
| Country | Italy | 
| Language | Italian | 
Certo certissimo... anzi probabile (Certain, Very Certain, As a Matter of Fact... Probable; English title Diary of a Telephone Operator) is a 1969 Italian film based on the story of the same title by Dacia Maraini. It stars Claudia Cardinale and Catherine Spaak.