Born Silsoe, Beds, 22 Nov. 1862; died 24 March 1948; Director of Physics, McGill University, 1919-35, Professor Emeritus of Physics, McGill University, Montreal, 1935; Dean Graduate Faculty, 1930-35; CBE 1918; FRS 1917; MA, DSc; Hon. LLD (Queen's and McGill).

Harold H. Everett was a British naturalist and collector who was active in Borneo during the late 19th century. He is primarily known for his extensive collections of bird specimens, and his work in Sarawak is well-documented in scientific journals. He co-authored "A History of Santubong, an Island off the Coast of Sarawak" with John Hewitt in 1909. Harold H. Everett was the younger brother of Alfred Hart Everett, a fellow naturalist also active in the region.