The San Diego County District Attorney is the elected district attorney for San Diego County, California. This office is responsible for the prosecution of both felony and misdemeanor violations of California state law that occur within the jurisdiction of San Diego County, California. Courts within their jurisdiction includes the , the California Court of Appeal for the Fourth District, and the California Supreme Court. Federal law violations are prosecuted by the U.S. Attorney for the Southern District of California. The current District Attorney is Summer Stephan, who replaced Bonnie Dumanis on an interim basis after the latter resigned in July 2017.