William Eliot
William Eliot may refer to:
- William Greenleaf Eliot, American educator, Unitarian clergyman, and founder of Washington University
- William Eliot, 2nd Earl of St Germans, British diplomat and politician
- William Eliot, 4th Earl of St Germans, British diplomat and Liberal politician
- William Eliot (MP), English politician
- William Havard Eliot, architect and builder of the Tremont House in Massachusetts