David McHattie Forbes was a Scottish botanist, ethnologist, sugarcane plantation manager and explorer who practiced forestry, agronomy, and horticulture.
David McHattie Forbes (21 July 1863  23 March 1937) was a Scottish botanist, ethnologist, sugarcane plantation manager and explorer on the island of Hawai'i. He practised forestry, agronomy, and horticulture and served as the first district forester of South Kohala in 1905, and twenty years later was appointed a judge in Waimea. 
