Nathaniel Boyden (16 August 1796 - 20 November 1873) was a U.S. Congressman from North Carolina between 1847 and 1849 and later between 1868 to 1869.
Born in Conway, Massachusetts in 1796, Boyden attended the common schools and then served in the War of 1812. He graduated from Union College in Schenectady, New York, in 1821 and moved to Stokes County, North Carolina in 1822.
After teaching school for several years in North Carolina, Boyden studied law and was admitted to the bar and practiced. In 1838 and 1840, he was elected to terms in the North Carolina House of Commons. In 1842, Boyden moved to Salisbury, North Carolina and continued to practice law. In 1844 he was elected to the North Carolina Senate, and in 1846, voted to a single term in the 30th United States Congress (March 4, 1847 - March 3, 1849) as a Whig.
Declining to stand for re-election in 1848, Boyden returned to the practice of law. After the American Civil War, he was a delegate to the 1865 North Carolina Constitutional Convention, and, upon the readmission to North Carolina to the union, he was elected as a Conservative to the 40th United States Congress and served from July 13, 1868 to March 3, 1869.
He unsuccessfully contested the election of Francis E. Shober to the 41st United States Congress, and afterwards resumed the practice of law until elected associate justice of the North Carolina Supreme Court in 1872. He served in that post until his death in Salisbury, on November 20, 1873; he is buried in the Lutheran Cemetery in Salisbury.