William Stevenson may refer to:
Government and politics
- 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) (born 1934), Canadian Supreme Court justice