The gunfight at the O.K. Corral, occurring on October 26, 1881, in Tombstone, Arizona Territory, was a short but significant confrontation between lawmen and members of the Cochise County Cowboys, a group involved in cattle and horse theft. The conflict escalated due to a dispute over enforcing a town ordinance that prohibited carrying weapons. This event, though lasting less than a minute, has become an iconic representation of the American Old West, immortalized in numerous books and films.

The gunfight involved the Earp brothers—Virgil, Wyatt, and Morgan—along with their associate Doc Holliday, acting as lawmen. They confronted Ike and Billy Clanton, and Tom and Frank McLaury, among others. The actual shootout did not occur at the O.K. Corral itself but in a nearby lot. The aftermath saw legal proceedings that cleared the lawmen, but the feud continued, leading to further violence against the Earps. The event's widespread recognition grew significantly after the publication of a biography of Wyatt Earp in 1931 and subsequent film adaptations.

Founded in 1879 following the discovery of silver, Tombstone, Arizona Territory, rapidly transformed from a small settlement into a bustling boomtown. By late 1881, its population, excluding certain demographics, exceeded 7,000, making it a prominent center in the American Southwest. The influx of wealth from silver mining attracted a diverse population, including merchants, professionals, and their families, leading to the establishment of various amenities like restaurants, churches, banks, and newspapers. However, this prosperity also attracted less savory elements, with horse rustlers and bandits frequently visiting the town. The era was marked by common occurrences of cattle theft and smuggling across the Mexican border, contributing to a volatile environment where shootings were not uncommon.

The Earp brothers—James, Virgil, Wyatt, and Morgan—were a close-knit family who moved through various frontier towns, engaging in law enforcement, saloon ownership, and other ventures. Virgil Earp arrived in Tombstone in late 1879, already serving as a Deputy U.S. Marshal, and later became the town's marshal. His brothers Morgan and Warren also relocated there. While the Earps generally supported the town's business interests, their authority often clashed with the loosely organized group known as the Cochise County Cowboys. This outlaw faction, which included figures like "Curly Bill" Brocius, was often aligned with local ranchers and Sheriff Johnny Behan, creating a deep-seated tension that would ultimately erupt into violence.

The events leading up to and during the O.K. Corral gunfight are subject to conflicting accounts, complicated by the partisan nature of the local newspapers, The Tombstone Epitaph and The Daily Nugget. The Epitaph, aligned with the town's business owners and lawmen, generally supported the Earps' version of events. Conversely, The Daily Nugget, associated with Sheriff Behan and the Cowboys, initially published a report that corroborated the lawmen's account but later shifted to support the Cowboys' perspective. The official investigation, including preliminary hearings, produced varied testimonies. While the Earps and their supporters claimed self-defense against armed outlaws who defied a lawful order, the Cowboys asserted they were shot without provocation. Medical evidence from Dr. George Goodfellow regarding Billy Clanton's wound suggested his hands were not raised as some witnesses claimed, adding another layer of complexity to the disputed narratives.