William Taylor Sullivan Barry (December 10, 1821 – January 29, 1868) was a U.S. Representative from Mississippi.
Born in Columbus, Mississippi, Barry was graduated from Yale Law School in 1841 and was initiated into Skull and Bones.[1]:67 Society in his last year. Barry was admitted to the bar in 1844 and then practiced law in Columbus, Ohio. On of his many interests was horticulture.
He served as member of the State house of representatives 1849–1851. Barry was elected as a Democrat to the Thirty-third Congress (March 4, 1853 – March 3, 1855). In his final year in this body he was selected as House Speaker.
He served as president of the State secession convention in 1861.
He served as member of the Provisional Confederate Congress. During the Civil War he enlisted in the Confederate States Army and raised the Thirty-fifth Regiment of Mississippi Infantry, at times acting as brigade commander.
He was Captured at Mobile April 12, 1865.
After his release, he resumed the practice of law in Columbus, Mississippi, where he died January 29, 1868. Barry is interred in Odd Fellows Cemetery.