William Stevenson may refer to:

• Sir William Stevenson (colonial administrator) (1805–1863), Governor of Mauritius
• William E. Stevenson (1820–1883), American politician, Governor of West Virginia
• William Ernest Stevenson (born 1870s), Northern Irish Senator
• William Francis Stevenson (1861–1942), U.S. Congressman from South Carolina
• William H. Stevenson (1891–1978), U.S. Congressman from Wisconsin
• William Stevenson (judge) (1934–2021), Canadian Supreme Court justice
• William Stevenson (New Zealand politician, born 1901) (1901–1983), New Zealand industrialist and philanthropist
• William Stevenson (New Zealand politician, born 1864) (1864–1935), member of the New Zealand Legislative Council

• Sir William Stevenson (poet) (1530–1575), English poet
• William Stevenson (physician) (1719?–1783), Irish physician
• William Stevenson (publisher) (1741–1821), English publisher and author
• William Stevenson (Scottish writer) (1772–1829), Scottish nonconformist preacher and writer; father of Elizabeth Gaskell
• William Bennet Stevenson (c. 1787 – after 1830), British explorer of South America
• William Stevenson (minister) (1805–1873), Scottish minister and antiquarian
• William Ford Stevenson (1811–1852), Fellow of the Royal Society
• William Grant Stevenson (1849–1919), Scottish sculptor and painter
• William Stevenson (bishop) (1878–1945), Australian Anglican bishop
• William Stevenson (sailor) (1889–1953), English sailor who was part of the Imperial Trans-Antarctic Expedition
• William Stevenson (athlete) (1900–1985), U.S. Olympic athlete, lawyer, and ambassador
• William Stevenson (canoeist) (born 1923–1992), Canadian canoeist
• William Stevenson (Canadian writer) (1924–2013), British-born Canadian author and journalist
• William "Mickey" Stevenson (born 1937), Motown songwriter and record producer
• Willie Stevenson (born 1939), footballer
• Willie Stevenson (baseball), American baseball player

• Bill Stevenson (disambiguation)
• William Stephenson (disambiguation)