Joaquin Murrieta Carrillo (sometimes spelled Murieta or Murietta) (1829 – July 25, 1853), also called the Robin Hood of the West or the Robin Hood of El Dorado, was a figure of disputed historicity. The novel The Life and Adventures of Joaquín Murieta: The Celebrated California Bandit (1854) by John Rollin Ridge ostensibly recounts his story.

Legends subsequently arose about a notorious outlaw in California during the California Gold Rush of the 1850s, but evidence for a historical Murrieta is scarce. Contemporary documents record testimony in 1852 concerning a minor horse thief of that name. Newspapers reported banditos named Joaquin, who robbed and killed several people during the same time. A California Ranger named Harry Love was assigned to track down Murrieta and was said to have brought his head in for the bounty.The popular legend of Joaquin Murrieta was that he was a forty-niner, a gold miner and a vaquero from Sonora. Peace loving, he was driven to revenge after his brother and he were falsely accused of stealing a mule. His brother was hanged and Murrieta was horse-whipped. His young wife was raped, and in one version, she died in Murrieta's arms. Swearing revenge, he hunted down the men who had violated her. He embarked on a short but violent career to kill his Anglo tormentors. The state of California offered a reward up to $5,000 for Murrieta, "dead or alive." He was reportedly killed in 1853, but the news of his death was disputed. Myths arose about him and his possible survival.