Murder is a 2004 Indian Hindi-language erotic thriller film, directed by Anurag Basu and produced by Mukesh Bhatt. It is the first installment in the Murder film series. It stars Emraan Hashmi, Ashmit Patel and Mallika Sherawat and is set in Bangkok, Thailand. This film is based on the 2002 American film Unfaithful, which itself was inspired by the French film The Unfaithful Wife (1969).

Murder was released on 2 April 2004 and, despite receiving mixed reviews from critics, managed to become a highly successful venture at the box office, earning a "super hit" status from Box Office India. The film was a huge breakthrough for its lead actors, particularly Hashmi and Sherawat. It received an A certificate from the Indian Censor Board for its erotic subject and scenes. The film was remade in Kannada as Ganda Hendathi (2006).

It had a cult following fan base upon release, and began a film series which continued with Murder 2 in 2011 and Murder 3 in 2013.