Reno 911! is an American television sitcom created by Robert Ben Garant, Thomas Lennon and Kerri Kenney-Silver for Comedy Central. It is a mockumentary-style parody of law enforcement documentary shows, specifically Cops, with comic actors playing the police officers. Lennon, Garant and Kenney-Silver all starred in and are billed as creators of the series.

The series initially aired from 2003 to 2009 on Comedy Central. A revival premiered on May 4, 2020, on streaming platform Quibi, which was renewed for an additional season (the show's eighth) on September 3, 2020. Quibi later announced in October 2020 that it would be shutting down while the eighth season was in production. According to star Niecy Nash, the eighth season would debut on another platform, which was later revealed to be The Roku Channel. The eighth season, entitled Defunded, premiered on February 25, 2022, on The Roku Channel.

The show is a direct parody of the reality show Cops, which follows actual police officers through their daily duties, such as chasing criminals, and intervening in domestic disputes. Reno 911! features members of the fictitious, massively inept "Reno Sheriff's Department" (in reality, Reno is under the jurisdiction of the Reno Police Department and the Washoe County Sheriff's Office). In the course of their duties patrolling both the city of Reno and the rest of Washoe County, Nevada, the deputies sometimes address the camera directly (as though being interviewed for a documentary). The show deals heavily in politically incorrect and racy humor, including many jokes about race, sexual orientation, substance abuse, rape, pedophilia, and mental disorders. Another main comedic aspect of the show is the outlandishly severe incompetence of the deputies—often resulting in their being outsmarted by the criminals they are attempting to control.

Unlike Cops, which the show parodies, Reno 911! Sheriff's deputies are constantly cursing, causing much of their dialogue to be censored for broadcast. The actors often perform their own stunts. Criminals on the series are portrayed by a variety of comedians, and sometimes by main cast members performing a dual role; in these instances, the cast member's face will be blurred in the style of Cops.

The show's characters occasionally refer to their own program. They insist that the show's producers told them the videotaped footage was going to be used for a Fox Television documentary series titled Heroes on Patrol, and often say in frustration that they have no control over what is aired, and that the show only seems to capture their moments of incompetence. The many "good" incidents, they allege, are left out of the (show-within-a-show's) final edit. Also, some suspects in the show refer to the film crew, and the program being aired on television; occasionally, they will attempt to get arrested just to be on TV.

In Lennon's words, Reno 911! came about, "like the best of ideas, through total desperation." Following the end of Viva Variety, The State alumnus worked on a series of pilots for the Fox Broadcasting Company, one of which, after a year's worth of dedicated writing, was terminated the day before shooting. It was scheduled to begin in the fall of 2000. With a month left before the pilot was expected to be due (and half of the budget still unused), the team asked if they could produce another pilot with the remaining resources, and the Fox executives agreed. Working quickly to take advantage of this, the initial Reno 911! pilot was conceived and shot in five days. Cedric Yarbrough, who had been hired for the cast of the canceled pilot, said that the cast was advised to "come up with [their] own characters" and return for filming.

As originally written, the sheriff's department material would have served as link material between traditional comedy sketches; the canceled project was being considered for the Fox Saturday lineup, and the team thought at the time that the Cops format was a natural framework for sketch comedy. However, during the shooting—and especially the editing—they realized the police element was more interesting than the sketches, and the finished pilot was, according to Garant, "remarkably similar" to the series that eventually aired. Nevertheless, Fox turned down the completed pilot. According to Lennon, their decision not to pick the show up was influenced by a scene, preserved in the eventual Comedy Central pilot, involving Lt. Dangle passionately kissing a man. It was another two years before Comedy Central greenlit the project.

Establishing shots were filmed on location in Reno, with everything else in Los Angeles and Carson, California, with some parts in Oregon.