Alternative Versionen

In the original version there is a shot of Tony's place at night just before Stansfield and his men come in on the birthday party. This isn't in the 'Version integrale' (International Cut).

An extended cut, retitled 'Leon: version integrale' was released in French cinemas on June 26, 1996. This version is 26 minutes longer than the previously released version and includes, amongst others, one sequence that was removed from the film after the disastrous tests with L.A. preview audiences. This version of the film is available on various DVDs, and is usually called the 'International Cut'. New scenes found in the International Cut include:

• Mathilda asking Leon to have sex with her and Leon refusing;
• Leon explaining why he had to leave Italy and go to New York when he was 19 years old;
• Mathilda and Leon sleeping together in a bed;
• Mathilda threatening to shoot herself playing Russian roulette.
• Leon and Mathilda hitting the home of a tattooed drug dealer, and setting fire to his supply of drugs;
• New training missions where Mathilda learns the ropes of becoming an assassin.
• Leon and Matilda going to a restaurant to celebrate her first hit

In the USA cable version, a flyover of Central Park in the beginning has been cut for no apparent reason, and the main titles moved to the first scene.

All German versions until the Director's cut DVD by Kinowelt miss a small scene where Mathilda tells Leon how old she is.

In Quebec there are 2 versions: the original R-Rated Version which is Rated 13+ in Quebec and the unrated uncut version which is 16+.