Paradox is a 2017 neo-noir Hong Kong action film directed by Wilson Yip, co-produced by Soi Cheang, with action direction by Sammo Hung. Written by Jill Leung and Nick Cheuk, the film stars Louis Koo as a police inspector who travels to Pattaya to search for his teenage daughter and is aided by local detectives played by Tony Jaa and Wu Yue. Along the way, he encounters the mastermind of an organ trafficking gang who colludes with a local political aide, leading to a series of hot pursuit. Paradox is the third installment of the SPL film series, following the 2005 film, SPL: Sha Po Lang and 2015's SPL II: A Time for Consequences. The film was released in China on 17 August 2017 and in Hong Kong on 25 August 2017 and has grossed US$80.84 million worldwide against a budget of US$14.5 million.

Samuel "Sammo" Hung Kam-bo is a Hong Kong actor, martial artist, film producer and director, known for his work in martial arts films, Hong Kong action cinema, and as a fight choreographer for other actors such as Jackie Chan.