Henry "Harry" J. Mandy (June 2, 1840 – August 14, 1904) was a soldier in the United States Army and a Medal of Honor recipient for his role in the American Civil War. Mandy enlisted in the Army from New York City in September 1862, and was assigned to the 4th New York Cavalry. Following his MOH action, he was commissioned as an officer. He transferred to the 9th New York Cavalry in February 1865, and mustered out with his regiment in July 1865. He is buried in Hampton National Cemetery, Hampton, Virginia. His grave can be found in the Pheobus Section B-8709.