William Whitmore
William Whitmore may refer to:
- William Whitmore (died 1648), English landowner and politician
- Sir William Whitmore, 2nd Baronet, English politician
- William Whitmore (died 1725), MP for Bridgnorth 1705–10 and 1713–25
- William Whitmore (British Army officer), MP for Bridgnorth 1741–7 and 1754–71
- William Elliott Whitmore, American blues singer and musician
- William Henry Whitmore, Boston businessman, politician and genealogist
- William Henry Whitmore (1875-1918), Unknown marine of Padstow