| Release Date | 14 September 1994 |
| US Box Office | $32,000,000 |
| Other Names | The Cleaner |
| Tagline | If you want a job done well hire a professional. |
| Genre | Action, Crime, Drama, Romance, Thriller |
| Country | France |
| Filming Locations | 71 97th Street, Upper East Side, Manhattan, New York City, New York, USA |
| Language | English |
| Sound Mix | Dolby Digital, SDDS |
| Color | Color |
| Film Type | Feature |
| Film Class | Action Thriller, Coming-of-Age, Buddy Film |
| Mood | Nail-biters |
| Themes | Protecting the Innocent, Orphans, Unlikely Friendships, Hired Killers, Innocence Lost |
| Tones | Slick, Tense, Visceral, Harsh, Humorous, Disturbing, Quirky |
| Tags | Corruption, DEA (Drug Enforcement Agency), Gangster, Girl, Hitman, Partner, Relationship |
Léon (also known as The Professional and Léon: The Professional) is a 1994 thriller film written and directed by French director Luc Besson. It stars Jean Reno as a mob hitman, Gary Oldman as a corrupt DEA detective, and a young Natalie Portman, in her feature film debut, as a 12-year-old girl who is taken in by the hitman after her family is murdered by corrupt police agents.