Mr. Holmes is a 2015 mystery film directed by Bill Condon, based on Mitch Cullin's 2005 novel A Slight Trick of the Mind, and featuring the character Sherlock Holmes. The film stars Ian McKellen as Sherlock Holmes, Laura Linney as his housekeeper Mrs. Munro and Milo Parker as her son Roger. Set primarily during his retirement in Sussex, the film follows a 93-year-old Holmes who struggles to recall the details of his final case because his mind is slowly deteriorating.

Principal photography began on 5 July 2014, in London. The film was screened out of competition at the 65th Berlin International Film Festival and had its premiere on 7 February 2015.

The film was released in British cinemas on 19 June 2015, and in the United States on 17 July 2015.