William Morrison may refer to:

• William McKenzie Morrison (1857–1921), American photographer
• William Morrison (poet) (1881–1973), Irish poet
• Joseph Samachson or William Morrison (1906–1980), science-fiction writer
• William Morrison (director), Canadian music video director and musician

• William Morrison (trader) (19th century), fur trader in Old Crow Wing, Minnesota
• William Morrison (businessman) (1874–1956), English founder of supermarket chains

• William Morrison (American politician), member of the North Carolina General Assembly of 1779
• William Ralls Morrison (1824–1909), U.S. Representative from Illinois
• William Robert Morrison (1878–1947), Canadian politician and Mayor of Hamilton, Ontario
• William Morrison (Alberta politician) (1891–1970), former member of the Legislative Assembly of Alberta
• William Morrison, 1st Viscount Dunrossil (1893–1961), British politician and Governor General of Australia
• William McG. Morrison (1903–1960), mayor of Charleston, South Carolina
• William Morrison (Australian politician) (1928–2013), Member of the Australian House of Representatives
• William Morrison (Canadian politician), politician in Lillooet, British Columbia

• William Morrison (gardener), plant collector employed by Kew, 1824–1839
• William Morrison (chemist) (1850-1927), Scotland-born inventor of the first U.S. practical electrical car

• see: es:William Morrison

• William Morrison (dentist) (1860–1926), American dentist

• Edward Morrison (American football) (1894–1961), American college football coach
• William Morrison (cricketer) (1850–1910), New Zealand cricketer
• William Morrison (rugby union) (1875-1944), Scotland international rugby union player

• William Vitruvius Morrison (1794–1838), Irish architect
• William Morrison (missionary) (1867–1918), American missionary based in the Congo Free State
• William V. Morrison (1906–1977), American lawyer, probate investigator, and genealogical researcher
• William R. Morrison (historian) (born 1942), Canadian historian of the Canadian North
• William Garth Morrison (1943–2013), Chief Scout of the United Kingdom and Overseas Territories

• Bill Morrison (disambiguation)
• William Morison (disambiguation)