Sir Frederick William Alpin Gordon Haultain (November 25, 1857 – January 30, 1942) was a lawyer and a long serving Canadian politician and judge. His career in provincial and territorial legislatures stretched into four decades. He served as the first premier of Canada's Northwest Territories from 1897 to 1905 as is recognized as having a significant contribution towards the creation of the provinces of Alberta and Saskatchewan. From 1905 on he served as Leader of the Official Opposition in Saskatchewan as well as Leader of the Provincial Rights Party. His legislative career ended when he was appointed to the judiciary in 1912.