Cocaine is a 1922 British crime film directed by Graham Cutts and starring Hilda Bayley, Flora Le Breton, Ward McAllister and Cyril Raymond. It depicts the distribution of cocaine by gangsters through a series of London nightclubs and the revenge a man seeks after his daughter's death.

Because of its depiction of drug use, it was the most controversial British film of the 1920s. Authorities feared that it might encourage the spread of narcotics. However, as it had a clear message about the dangers of drugs, censors eventually passed it in June 1922 and it was released in cinemas under the alternative title While London Sleeps.The Chinese gangster Min Fu was reportedly based on real-life criminal Brilliant Chang.