William Dennison or Denison may refer to:
- William Dennison (academic), 18th-century master of University College, Oxford
- William Dennison Jr. (1815âÂÂ1882), American politician, governor of Ohio and U.S. Postmaster General
- William Dennison (Canadian politician) (1905âÂÂ1981), mayor of Toronto, Member of Provincial Parliament
- William Neil Dennison (1841âÂÂ1904), American Civil War artillery officer
- William Denison (1804âÂÂ1871), British colonial official, governor of New South Wales, 1855âÂÂ1861, and governor of Madras, 1861âÂÂ1866
- William Denison, 1st Earl of Londesborough (1834âÂÂ1900), British peer and Liberal politician
- William Denison (cricketer) (1801âÂÂ1856), English cricketer and cricket official
- William Clark Denison, American mycologist
- William Evelyn Denison (1843âÂÂ1916), British member of parliament for Nottingham, 1874âÂÂ1880
- William Kendall Denison (1869âÂÂ?), American classicist, and educator
- William S. Denison (1794âÂÂ1880), Baptist farmer; benefactor and namesake of Denison University in Ohio
- William Joseph Denison (1770âÂÂ1849), English banker and politician
- William Beckett-Denison (1826âÂÂ1890), English banker and Conservative politician
- Doug Dennison (William Douglas Dennison, born 1951), American football player
- Paymaster Dennison (1954âÂÂbefore 2007), Motswana footballer
See also