William Frederick Neill

Sir William Frederick Neill (8 May 1889 – 3 January 1960) was a unionist politician in Northern Ireland.

Neill studied at Belfast Model School before becoming an estate agent. He was elected as an Ulster Unionist Party alderman on the Belfast Corporation in 1938, and served as Lord Mayor of Belfast from 1946 to 1949. He was elected in the 1945 UK general election, for North Belfast, serving five years. He was knighted in 1948. In 1954, he served as High Sheriff of Belfast, and then as Deputy Lord Mayor the following year.