William Nelson
William Nelson may refer to:
- Billy Bass Nelson, American musician
- Billy Nelson , American vaudeville comedian and actor
- Billy Nelson , American steeplechaser
- Billy Nelson, Scottish boxing coach and former boxer
- William Nelson , American colonial governor of Virginia
- William Nelson , British district judge
- William Nelson , member of parliament for the City of York
- William Nelson , U.S. congressman for New York
- William Nelson , member of the Wisconsin State Senate
- William Nelson, American wrestler who won a bronze medal at the 1904 Olympics
- William Nelson, 1st Earl Nelson, elder brother of Horatio Nelson, 1st Viscount Nelson
- William "Bull" Nelson, Union army general in the American Civil War
- William E. Nelson, murdered by his wife Omaima Nelson
- William G. Nelson, American cancer researcher and professor
- Harold Nelson , New Zealand runner
- William L. Nelson , U.S. congressman for Missouri
- William L. Nelson , World War II Medal of Honor recipient
- William Lambie Nelson, member of the Queensland Legislative Assembly
- William T. Nelson, U.S. Navy rear admiral
- William Rockhill Nelson, American journalist and publisher
- William Nelson , New Zealand farmer and industrialist
- William Nelson , American inventor killed by own invention
- William Nelson Jr., Virginia politician, professor, lawyer and judge, son of William Nelson