Cops (stylized in all caps as COPS) is an American reality legal television documentary programming series that is currently in its 36th and 37th seasons. It is produced by Langley Productions and premiered on the Fox network on March 11, 1989. The series, known for chronicling the lives of law enforcement officials, follows police officers and sheriff's deputies, sometimes backed up by state police or other state agencies, during patrol, calls for service, and other police activities including prostitution and narcotic stings, and occasionally the serving of search and arrest warrants at criminal residences. Some episodes have also featured federal agencies. The show's formula follows the cinéma vérité convention, which does not consist of any narration, scripted dialogue, incidental music or added sound effects, depending entirely on the commentary of the officers and on the actions of the people with whom they come into contact, giving the audience a fly on the wall point of view. Each episode typically consists of three self-contained segments which often end with one or more arrests.

It is one of the longest-running television shows in the United States and, in May 2011, it became the longest-running show on Fox (since then, its duration has been surpassed by the duration of The Simpsons). It also became the longest running live action series on Fox. When America's Most Wanted was canceled after 23 years, the show's host John Walsh, made numerous appearances on Cops. In 2013, the program moved to Spike TV, now known as Paramount Network.

In late 2007, during the premiere of its 20th season, episodes of Cops began broadcasting in widescreen, though not in high definition. In June 2020, Paramount Network pulled the show from its schedule in response to George Floyd protests following his murder while under arrest by the Minneapolis Police Department, and announced its cancellation days later. The show remains in production for its international and overseas partners, and began to film anew in Spokane County, Washington, with its sheriff's department in October 2020. In September 2021, it was announced that Fox sibling Fox Nation picked up the show. The 34th season premiered in September 2022. Season 35 premiered on April 7, 2023. Following a three month hiatus, the show returned on October 6. Season 36 would premiere on April 5, 2024 with several episodes featuring beach patrol officers during spring break. Season 37 would premiere on March 7, 2025 with additional spring break-themed episodes. As of March 7, 2025, season 36 is still ongoing as well, with numerous episodes still yet to air.