John Clark (sometimes spelled Clarke) (February 28, 1766 – October 12, 1832) was an American politician.
Clark served in the Georgia House of Representatives prior to being elected to consecutive two-year terms as the 31st Governor from 1820 to 1824. Clark also served in the Georgia Militia during the American Revolution and achieved the rank of Major General in 1796. While governor of Georgia he was involved in the U.S. Supreme Court case known as Ex parte Madrazzo.
Personal life 
Son of Revolutionary War hero Elijah Clarke, John Clark was born in Edgecombe County, North Carolina and moved to Wilkes County, Georgia in the early 1770s. He died of yellow fever in St. Andrews Bay (Florida) in what was then Washington County (currently Bay County) and was buried in that same city; however, his grave was relocated to Marietta National Cemetery in Georgia in 1923 by the Daughters of the American Revolution.
Clarke County, Alabama is named after him.