Fortney Hillman Stark Jr., known as Pete Stark, was an American businessman and politician who was a member of the United States House of Representatives from 1973 to 2013. A Democrat from California, Stark's district—California's 13th congressional district during his last two decades in Congress—was in southwestern Alameda County and included Alameda, Union City, Hayward, Newark, San Leandro, San Lorenzo, and Fremont, as well as parts of Oakland and Pleasanton. At the time he left office in 2013, he was the fifth most senior Representative, as well as sixth most senior member of Congress overall. He was also the dean of California's 53-member Congressional delegation, and the only openly atheist member of Congress.

California's 13th congressional district is a congressional district in the U.S. state of California. John Duarte, a Republican, has represented this district since January 2023.