Henry Highland Garnet (December 23, 1815 – February 13, 1882) was an American abolitionist, minister, educator, orator, and diplomat. Having escaped as a child from slavery in Maryland with his family, he grew up in New York City. He was educated at the African Free School, and later the Noyes Academy and the Oneida Institute. As a Presbyterian minister, his drive for abolitionism was based in religion.
Garnet was a prominent member of the movement that favored political action over moral suasion. Renowned for his skills as a public speaker, he urged enslaved African Americans to take direct action in freeing themselves from slavery. Garnet was a supporter of the emigration of American free blacks to Mexico, Liberia, or the West Indies, founding the African Civilization Society alongside Martin Delany.