The Firm may refer to more than one thing:

• The Firm was a British rock group.
• The Firm is the title of a novel by John Grisham. It was made into a 1993 movie The Firm starring Tom Cruise.
• The Firm was a hip-hop music supergroup comprised of Nas, Foxy Brown, AZ, and Nature, who released one album in 1997.
• The Firm were a British pop music group who recorded the UK number one novelty hit Star Trekkin' in 1987.
• The Firm is a Hollywood talent management company.
• The Firm was the name of a London criminal gang run by the Krays
• The Firm is allegedly how the British Royal Family refers to itself.