Mark Lamb is an American law enforcement officer and politician who has served as sheriff of Pinal County, Arizona, from January 1, 2017 until December 31, 2024. He is a member of the Republican Party. Lamb previously served in the Salt River Pima–Maricopa Indian Community police department.
He ran unopposed for re-election as sheriff in 2020. He was a Republican candidate for the U.S.
