Solomon Northup (born July 10, c. 1807 or 1808) was an American abolitionist and the primary author of the memoir Twelve Years a Slave. A free-born African American from New York, he was the son of a freed slave and a free woman of color. A farmer and a professional violinist, Northup had been a landowner in Washington County, New York. In 1841, he was offered a traveling musician's job and went to Washington, D.C. (where slavery was legal); there he was drugged, kidnapped, and sold as a slave. He was shipped to New Orleans, purchased by a planter, and held as a slave for 12 years in the Red River region of Louisiana. He remained a slave until he met Samuel Bass, a Canadian working on his plantation who helped get word to New York. His family and friends enlisted the aid of the Governor of New York, Washington Hunt, and Northup regained his freedom on January 3, 1853.

In his first year of freedom, Northup wrote and published a memoir, Twelve Years a Slave (1853). He lectured on behalf of the abolitionist movement, giving more than two dozen speeches throughout the Northeast about his experiences, to build momentum against slavery. He largely disappeared from the historical record after 1857, although a letter later reported him alive in early 1863. The details of his death have never been documented.

Northup's memoir was adapted and produced as the 1984 television film Solomon Northup's Odyssey and the 2013 feature film 12 Years a Slave. The latter won three Academy Awards, including Best Picture, at the 86th Academy Awards.