Billy Claiborne ( – November 14, 1882) was an American outlaw cowboy, drover, miner, and gunfighter in the American Old West. He killed James Hickey in a confrontation in a saloon, but it was ruled self-defense. He was present at the beginning of the Gunfight at the O.K. Corral, but was unarmed and ran from the shootout. Only a year later, while drunk, he confronted gunfighter "Buckskin" Frank Leslie and was killed.