The Wheatland Hop Riot took place at the Durst Ranch in Wheatland on August 3, 1913. It was the first major farm labor confrontation in California.

Ralph Haines Durst, owner of Durst Ranch, was the largest employer of migrant farm workers in California. In response to his advertisements, an estimated 2,800 migrant farm workers showed up to pick hops on August 1, 1913. There was not enough work for all of them, and the conditions and pay were abysmal. On August 2, Richard 'Blackie' Ford and Herman Suhr of the Industrial Workers of the World called a protest meeting an organized a strike. On August 3, Ralph Durst called out the local sheriff to control the strike. A deputy sheriff fired a warning shot into the air, and the migrant farm workers began rioting in response to the threat of violence. The sheriff, the district attorney, and two migrant farm workers were killed in the riot. At least a dozen other people were injured.

Blackie Ford, Herman Suhr, and two other strike organizers were charged with being accessories to the murder. The trial was held in Marysville. Defense attorneys petitioned for a change of venue and a new judge, on the grounds that Judge E. P. McDaniel and the new district attorney were both personal friends of the district attorney who had been killed in the riot, the son of the dead district attorney was also working as a prosecutor in the case, and bias against the Industrial Workers of the World for their socialist views was widespread in Yuba County. The petitions were denied, and the trial continued in Marysville under the same judge. Ford and Suhr were convicted of second-degree murder for their roles in the riot, and were sentenced to life in prison. They were eventually released on parole from Folsom Prison in 1925 and 1926, respectively.

The riot focused public opinion for the first time on the plight of California's agricultural laborers, and spurred Governor Hiram Johnson to create a new State Commission on Immigration and Housing. The commission created new state legislation that regulated working conditions for migrant farm workers.