Nehemiah Rice Knight (December 31, 1780 – April 18, 1854) was Governor of Rhode Island and United States Senator from Rhode Island. Born in Cranston, he attended the common schools. In 1802 he was a member of the Rhode Island House of Representatives; he moved to Providence and was clerk of the Court of Common Pleas from 1805 to 1811 and clerk of the circuit court from 1812 to 1817. He was also collector of customs for the same period.