Harold Adrian Milne Barbour (7 July 1874 – 23 December 1938) was a unionist politician in Northern Ireland.
Sir Milne Barbour was his elder brother.
[1] He studied at Harrow School and Brasenose College, Oxford before assuming the directorship of a linen company in Glasgow at some time before 1911.
[2] He was elected as an Irish Unionist Party county councillor, then served in the Senate of Northern Ireland from 1921 to 1929.
[3] Barbour was also active in the co-operative movement in Ireland, and his photographs of rural north and west Ireland in the early years of the 20th-century have been widely exhibited.