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William Kennedy Clowney (March 21, 1797 – March 12, 1851) was a U.S. Representative from South Carolina from the year 1837 to 1839 and was also the governor of South Carolina from 1840 to 1842.

Born in Union County, South Carolina, Clowney attended private schools and an academy. He was graduated from the South Carolina College at Columbia in 1818.

He taught in the public schools of Unionville and later at the University of South Carolina. He served as member of the State house of representatives 1830–1831. He was admitted to the bar and began practice in Union. He served as commissioner in equity of South Carolina 1830–1833.

He was elected as a Nullifier to the Twenty-third Congress (March 4, 1833 – March 3, 1835) and then again as a Nullifier to the Twenty-fifth Congress (March 4, 1837 – March 3, 1839). He served as chairman of the Committee on Expenditures in the Department of War for the Twenty-fifth Congress. He served as member of the State senate in 1840. He also served as Lieutenant Governor of South Carolina.

He died in Union, South Carolina, on March 12, 1851, and was interred in Fairforest Cemetery, South Carolina.

• United States Congress. "William K. Clowney (id: C000534)". Biographical Directory of the United States Congress.