Leader (Sinhala: ලීඩර්) is a 2009 Sri Lankan Sinhala action thriller film directed by Ranjan Ramanayake and co-produced by Bevan Perera and P. Aruran. It stars Ranjan Ramanayake and Adeen Khan, along with Babu Antony, Robin Fernando and Anusha Damayanthi. Music composed by Suneth Kelum. Public Performance Board of Sri Lanka removed some controversial political parts of the film. Leader is the film in Sinhala cinema history that had been screened with the most number of copies with 50 film theaters.

Some of the political clips were removed from the film due to Public Performance Board (PPB). The film was screened free of charge for two weeks from February 27 and producer decided to direct Rs. 1 from each ticket sold in all the theaters to Ranaviru fund. In April 2009, producer donated one day's collection of the film in all 50 theaters to the construction of Jaffna Cultural Center.

It is adopted from 1994 Hong Kong Film The Bodyguard From Beijing.