Leicester King (born in Suffield, Connecticut, May 1, 1789 – September 19, 1856) was a 19th-century businessman, judge, and state senator in the Ohio General Assembly. Married to Julia Ann Huntington, he moved to Warren, Ohio in 1817, where he worked as a mercantilist until 1833. After leaving the mercantile business, he devoted his time to the building of the Pennsylvania and Ohio Canal until being appointed associate judge of the Trumbull County Court of Common Pleas. King died September 19, 1856. He is buried in Oakwood Cemetery in Warren, Ohio.