George H. Allan (January 19, 1861-August 13, 1938) was an American attorney and politician from Maine. Allan, a Republican from Portland, served five terms in the Maine House of Representatives between 1901 and 1938. He was elected in 1900, 1902, 1916, 1918, and 1936. He died prior to the completion of his fifth term and is buried at Portland's Evergreen Cemetery.