William Wyndham
William Wyndham may refer to:
- Sir William Wyndham, 1st Baronet, of Orchard Wyndham, English politician, Member of Parliament for Somerset, 1656–1658 and for Taunton 1660–1679
- Sir William Wyndham, 3rd Baronet, of Orchard Wyndham, English politician, Chancellor of the Exchequer, 1713–1714, Member of Parliament for Somerset, 1710–1740
- The Hon. William Frederick Wyndham, English diplomat
- William Wyndham (1796–1862), English MP for Wiltshire South, 1852-1859