John Hugh Graham (April 1, 1835 – July 11, 1895) was an American educator, businessman, Civil War veteran, and politician who served one term as a U.S. Representative from New York from 1893 to 1895.

Born in Belfast, Graham emigrated in 1836 to the United States with his parents, who settled in Brooklyn, New York.

During the Civil War he was recruited into Company A, 5th New York Heavy Artillery Regiment, and served three years as its captain.

For gallant and meritorious services at Harper's Ferry and in the Shenandoah Valley, Virginia, he was commissioned major and brevetted lieutenant colonel.

This article incorporates public domain material from the Biographical Directory of the United States Congress