| William Brown | |
| Constituency: | Newcastle |
| Term Start: | 17 May 1989 |
| Term End: | 19 May 1993 |
| Predecessor: | Ethel Smyth |
| Successor: | John Finlay |
| Office: | Member of Down District Council |
| Constituency1: | Ballynahinch |
| Term Start1: | 15 May 1985 |
| Term End1: | 17 May 1989 |
| Predecessor1: | District created |
| Successor1: | Walter Lyons |
| Constituency2: | Down Area A |
| Term Start2: | 18 May 1977 |
| Term End2: | 15 May 1985 |
| Predecessor2: | William Cochrane |
| Successor2: | District abolished |
| Office3: | Member of the Northern Ireland Assembly for South Down |
| Term Start3: | 20 October 1982 |
| Term End3: | 1986 |
| Birth Date: | 1930 |
| Party: | Ulster Unionist Party |
William Brown (born 1930) is a Northern Irish former politician with the Ulster Unionist Party.
A farmer by profession Brown was active in both the Ulster Unionists and the Orange Order, and served as a member of Down District Council from 1977 to 1993.[1] Elected to the Northern Ireland Assembly in 1982 for South Down he served as deputy chair of that body's Agriculture Committee.[1]