William Sewell
William Sewell may refer to:
- William H. Sewell, United States sociologist
- William H. Sewell Jr., American academic
- William J. Sewell, Union Army officer and Senator from New Jersey
- William Sewell (author), English divine and author
- William Sewell (cricketer), English cricketer
- William Sewell (poet), New Zealand poet
- William Sewell (trade unionist), British trade unionist
- William Sewell (veterinary surgeon), principal of the London Veterinary College
- William Arthur Sewell, university professor of English
- William Elbridge Sewell, United States Navy officer
- William Henry Sewell, British Army officer