Joaquin Valenzuela (c. 1820 – 1853 or 1858) was a Sonoran fortyniner who came to California in 1849, during the California Gold Rush, with a small band of people from the vicinity of their hometown with Joaquin Murrieta. He subsequently became one of the leaders of the Five Joaquins Gang. Descendants of his family and those of former gang members said he died in 1853, at the hands of the California Rangers on Cantua Creek. The San Luis Obispo Vigilantes claim he was still alive when they took him to be hanged for his crimes with the Five Joaquins Gang in San Luis Obispo in 1858.