William, Willie, Bill or Billy Watson may refer to:
Arts
Military
Politics
- William Watson (16th century MP), MP for the City of York
- William Henry Watson (1796âÂÂ1860), British politician and judge
- William Watson (New South Wales politician) (1815âÂÂ1877), Australian politician
- William John Watson (1839âÂÂ1886), Australian politician
- William T. Watson (1849âÂÂ1917), American banker and governor of Delaware
- William W. Watson Sr., 19th century North Carolina politician
- William Watson (Australian politician) (1864âÂÂ1938), Australian politician
- William McLean Watson (1874âÂÂ1962), Scottish politician
- W. Marvin Watson (1924âÂÂ2017), U.S. Postmaster General
- William Watson, mayor of Rockford, Illinois, U.S., 1878âÂÂ79
Science
- William Watson (scientist) (1715âÂÂ1787), English physician and scientist
- William Watson (physician) (1744âÂÂ1824), English physician and naturalist
- William Watson (surveyor and scientist) (1784âÂÂ1857), cartographer and sundial-maker from Seaton Ross
- William Livingstone Watson (1835âÂÂ1903), Scottish East India merchant and astronomer
- Watson Cheyne or Sir William Watson (1852âÂÂ1932), 1st Baronet Cheyne, Scottish surgeon and bacteriologist
- William Watson (botanist) (1858âÂÂ1925), British botanist and horticulturalist
- William Watson (physicist, born 1868) (1868âÂÂ1919), British physicist
- William Watson (Scottish physicist) (1884âÂÂ1952), FRSE Scottish physicist and mathematician
- William Weldon Watson (1899âÂÂ1992), American nuclear physicist
Sports
Association football
- William Watson (footballer, born 1873) (1873âÂÂ1929) , Scottish footballer (Falkirk FC and Scotland)
- Billy Watson (footballer, born 1890) (1890âÂÂ1955), English international footballer with Burnley, 1908âÂÂ1925
- Billy Watson (footballer, born 1893) (1893âÂÂ1962), English footballer with Huddersfield Town, 1912âÂÂ1927
- William Watson (footballer, fl. 1903âÂÂ1909), Lincoln City footballer active in the 1900s
- Bill Watson (footballer, born 1899) (1899âÂÂ1969), English footballer in the 1920sâÂÂ30s
- Bill Watson (footballer, born 1916) (1916-1986), English footballer, fullback for Lincoln City, Chesterfield and Rochdale
- William Watson (footballer, born 1900) (1900âÂÂ?), Scottish footballer (Dumbarton FC)
- Willie Watson (footballer, born 1910), Scottish footballer (Hibernian, Ayr United)
- Jimmy Watson (footballer, born 1914) (1914âÂÂ1979), aka Bill Watson (William James Boyd Watson), English footballer in the 1930s
- Billy Watson (soccer), Scottish-American footballer in the 1920sâÂÂ30s
- Billy Watson (Scottish footballer) (died 1950), Bradford City A.F.C. footballer, 1921âÂÂ1931
- Willie Watson (English footballer), English footballer, full-back for Northampton Town
- Willie Watson (English cricketer) (1920âÂÂ2004), English cricketer and footballer
- Willie Watson (footballer, born 1949), Scottish footballer (Manchester United, Motherwell)
- Graham Watson (footballer, born 1949), English footballer, aka "Willie" Watson
Cricket
Rugby
Other sports
- William Watson (motoring pioneer) (1873âÂÂ1961), British racing driver and motoring pioneer
- William Watson (weightlifter) (1918âÂÂ1998), British Olympic weightlifter
- Whipper Billy Watson (1915âÂÂ1990), Canadian wrestler
- William Watson (decathlete) (1916âÂÂ1973), aka "Big Bill" Watson, American track and field athlete
- William Watson (basketball) (fl. 1920s), African-American basketball player
- Bill Watson (baseball), American baseball player
- Bill Watson (ice hockey) (born 1964), ice hockey player in Minnesota
- Willie Watson (bowls), Irish international lawn bowler
- William Poss Watson (1868âÂÂ1950), Australian rules footballer
Other people
- William Watson (bow maker) (1930âÂÂ?), British bow maker
- William Watson (chess player) (born 1962), English chess grandmaster
- William Watson (economist), Canadian economist, member of the research advisory board for MacdonaldâÂÂLaurier Institute
- William Watson (merchant) (died 20 November 1559), English merchant and shipowner
- William Watson (priest) (1559âÂÂ1603), English Roman Catholic priest and conspirator
- William Watson (sinologist) (1917âÂÂ2007), professor of Chinese art and archaeology at London University
- William Watson, Baron Watson (1827âÂÂ1899), Scottish judge
- William Watson, Baron Thankerton (1873âÂÂ1948), Scottish judge
- William J. Watson (1865âÂÂ1948), Scottish teacher and scholar of place names
- William R. Watson (1887âÂÂ1973), Canadian art dealer