Garnet, Henry Highland gär´nĭt [key], 1815–82, American abolitionist clergyman, b. Kent co., Md. Born a slave, he escaped in 1824 and was educated at the Oneida Institute, Whitesboro, N.Y. He was an eloquent speaker, but his radicalism, particularly in a speech at Buffalo in 1843, in which he called upon slaves to rise and slay their masters, caused his influence to decline. He was opposed and superseded in leadership by the more moderate Frederick Douglass . Garnet served as a Presbyterian pastor in Troy, N.Y., in New York City, and in Washington, D.C. In 1881 he was appointed minister to Liberia, but he died two months after his arrival there.

See study by E. Ofari (1972).