There are a number of people who have been (or are) named William Gibson.
- William Carleton Gibson, a neurologist in Victoria, British Columbia, Canada. Known as "Cecil Green's most expensive friend" due to his encouragement of Green's philanthropy
- William Gibson (novelist) (born 1948), science fiction/cyberpunk novelist, author of Neuromancer, credited with coining the term cyberspace
- William Gibson (Australian politician), Australian politician
- William Gibson (Canadian parliamentarian) (1849–1914), Canadian MP and Senator
- William Gibson (martyr) (died 1596), English Catholic martyr
- William Gibson (dentist) (born 1932?), American administrator and dentist, chairman of NAACP since 1985
- William Gibson (Member of Parliament) (1815–1890), Canadian Member of Parliament
- William Gibson (playwright) (born 1914), American playwright, author of The Miracle Worker
- William Gibson (producer), American independent film producer and director
- William Hamilton Gibson (1850–1896), American illustrator, author and naturalist
William Gibson | William Gibson