William H. Thomas may refer to:
William Hannibal Thomas (1843–1935), American teacher, journalist, judge, writer and legislator William H. Thomas (Wisconsin politician) (1821–1898), American politician William Henry Thomas (1920–2009), American politician William Holland Thomas (1805–1893), American Confederate army officer William H. Thomas (Medal of Honor) (1923–1945), American soldier William H. Thomas (physician) (born 1959), American physician William H. Thomas (Alabama judge) (1867–1945), associate justice of the Alabama Supreme Court William H. Thomas (Maryland judge) (c. 1861–1924), judge of the Maryland Court of Appeals
See also William Howell Arthur Thomas (1895–1979), Canadian MP William Huw-Thomas (), Welsh actor William Thomas (disambiguation)