Samuel C. Fessenden (March 7, 1815-April 18, 1882) was a United States Congressman and brother of Treasury Secretary William Pitt Fessenden.
Born in New Gloucester, Maine, he graduated from Bowdoin College in 1834 and from Bangor Theological Seminary in 1837.
He was ordained and installed as pastor of the Second Congregational Church if Thomaston, Maine from 1837 to 1856. He then began to study the law and was admitted to the bar and began practicing in 1858, eventually becoming judge of the Rockland municipal court.
He was elected as a Republican to the 37th Congress, serving March 4, 1861 to March 3, 1863; was not a candidate for renomination. He was an examiner in the United States Patent Office from 1865 to 1879 and then the United States consul at Saint John, New Brunswick from 1879 to 1881.
He died in Stamford, Connecticut in 1882.