William Brownlow
William Brownlow may refer to:
- William Gannaway Brownlow, governor of Tennessee
- Sir William Brownlow, 1st Baronet, English politician and barrister
- Sir William Brownlow, 4th Baronet, British Member of Parliament for Peterborough and Bishop's Castle
- William Brownlow (1683–1739), Irish MP for Armagh County 1711–1739
- William Brownlow (1726–1794), Irish MP for Armagh County 1753–1794 and Strabane
- William Brownlow (1755–1815), Irish MP for Armagh County 1795–1798, British MP for Armagh
- William Brownlow, 3rd Baron Lurgan, Anglo-Irish aristocrat, landowner, hotel proprietor and sportsman
- William Brownlow (British Army officer), British Army officer and MP for North Down
- William Brownlow (bishop), English prelate of the Roman Catholic Church