United Artists (UA) is an American film production and distribution company owned by Amazon MGM Studios. In its original operating period, it was founded on February 5, 1919 by Charlie Chaplin, D. W. Griffith, Mary Pickford and Douglas Fairbanks as a venture premised on allowing actors to control their own financial and artistic interests rather than being dependent upon commercial studios.

After numerous ownership and structural changes and revamps, United Artists was acquired by media conglomerate Metro-Goldwyn-Mayer (MGM) in 1981 for a reported $350 million ($1.2 billion today). On September 22, 2014, MGM acquired a controlling interest in One Three Media and Lightworkers Media and merged them to revive the television production unit of United Artists as United Artists Media Group (UAMG). MGM itself acquired UAMG on December 14, 2015, and folded it into their own television division.

MGM briefly revived the United Artists brand as United Artists Digital Studios for the Stargate Origins web series as part of its Stargate franchise, but retired the name after 2019 and instead used its eponymous brand for subsequent releases.

A local joint distribution venture between MGM and Annapurna Pictures launched on October 31, 2017 was rebranded as United Artists Releasing on February 5, 2019, in honor of its 100th anniversary. However, Amazon, MGM's now-parent company, folded UAR into MGM on March 4, 2023, citing "newfound theatrical release opportunities" following the box-office opening success of Creed III.

On July 26, 2024, Amazon MGM Studios announced the company's revival, entering a multi-year first look deal with film producer Scott Stuber, who will also be involved with all releases under the freshly revived production company.

In 1918, Charlie Chaplin could not get his parent company First National Pictures to increase his production budget despite being one of their top producers. Mary Pickford and Douglas Fairbanks had their own contracts, with First National and Famous Players–Lasky respectively, but these were due to run out with no clear offers forthcoming. Sydney Chaplin, brother and business manager for Charlie, deduced something was going wrong, and contacted Pickford and Fairbanks. Together they hired a private detective, who discovered a plan to merge all production companies and to lock in "exhibition companies" to a series of five-year contracts.

Chaplin, Pickford, Fairbanks, and D. W. Griffith incorporated United Artists as a joint venture company on February 5, 1919. Each held a 25% stake in the preferred shares and a 20% stake in the common shares of the joint venture, with the remaining 20% of common shares held by lawyer and advisor William Gibbs McAdoo. The idea for the venture originated with Fairbanks, Chaplin, Pickford and cowboy star William S. Hart a year earlier. Already Hollywood veterans, the four stars talked of forming their own company to better control their own work.

They were spurred on by established Hollywood producers and distributors who were tightening their control over actor salaries and creative decisions, a process that evolved into the studio system. With the addition of Griffith, planning began, but Hart bowed out before anything was formalized. When he heard about their scheme, Richard A. Rowland, head of Metro Pictures, apparently said, "The inmates are taking over the asylum." The four partners, with advice from McAdoo (son-in-law and former Treasury Secretary of then-President Woodrow Wilson), formed their distribution company. Hiram Abrams was its first managing director, and the company established its headquarters at 729 Seventh Avenue in New York City.