Herman Gerhard Gade (22 March 1870 – 1953) was a Norwegian physician, known for his work to fight tuberculosis. He was born in Bergen as the son of businessperson Fredrik Georg Gade (1830–1905) and his wife Ingeborg Wallem (1830–1902). In June 1899 he married Alvide C. Pedersen from Stavanger. He was a brother of Fredrik Georg Gade, Jr, a brother-in-law of , a first cousin of Fredrik Herman Gade, John Allyne Gade and Fredrik Barbe Wallem and a nephew of Fredrik Meltzer Wallem.