Thomas Charles Berryhill (August 27, 1953 – August 29, 2020) was an American Republican politician. He was a member of the Stanislaus County Board of Supervisors from January 7, 2019 until his death. He previously represented the 8th district in the California State Senate from December 6, 2010 to November 30, 2018. He had also served in the California State Assembly, representing the 25th district from December 4, 2006 to November 30, 2010. After graduating from Ceres High School, Berryhill attended California Polytechnic State University, San Luis Obispo.