《这个杀手不太冷》（原题：Léon，美国上映片名：The Professional）是一部1994年的电影，由法国导演吕克·贝松编剧及执导，也是他首部往好莱坞发展拍摄的电影。由让·雷诺、盖瑞·欧德曼及娜塔莉·波特曼主演。

Léon: The Professional (French: Léon; Original U.S.: The Professional) is a 1994 English-language French thriller film written and directed by Luc Besson. The film stars Jean Reno as the titular mob hitman; Gary Oldman as corrupt DEA agent Norman Stansfield; a young Natalie Portman, in her feature film debut, as Mathilda, a 12-year-old girl who is taken in by the hitman after her family is murdered; and Danny Aiello as Tony, the mobster who gives the hitman his assignments.