William T. Smith (disambiguation)

William T. Smith (1916–2010) was an American farmer and politician from New York. William T. Smith may also refer to:


 * William Trickett Smith (1937–2021), American lawyer who was disbarred
 * William Trickett Smith II (born 1981), his son, American drug trafficker convicted of murdering his wife in Peru in 2007
 * William Thomas Smith (1896–1994), World War I flying ace
 * William Tyler Smith (1815–1873), English obstetrician, medical writer and journalist
 * William T. "Wee Willie" Smith (1911–1992), American professional basketball player