William Sharp may refer to:
Arts and entertainment William Sharp (engraver) (1749–1824), English engraver William Sharp (lithographer) (1803–1875), English-born lithographer and painter; lived in Boston, Massachusetts William Sharp (writer) (1855–1905), Scottish author and poet, pseudonym Fiona MacLeod
Politics William G. Sharp (1859–1922), American congressman (1909–14); Ambassador to France (1914) William Sharp (Australian politician) (1844–1929), New South Wales politician
Science William Sharp (homeopath) (1805–1896), English early science educator and homeopath William Sharp (surgeon) (1729–1810), surgeon to George III and musician William Sharp (scientist) (born 1936), American scientist and entrepreneur
Sports William Sharp (footballer) (1889–1915), Scottish footballer Billy Sharp (born 1986), English footballer Will Sharp (born 1986), Nigerian-born English rugby league player Bill Sharp (baseball) (born 1950), outfielder in Major League Baseball Bill Sharp (footballer) (1915–2006), Australian rules footballer
Other Sir William Sharp, 6th Baronet (1729–1780), Scottish soldier of fortune William F. Sharp (1885–1947), American World War II general
See also Michael William Sharp (1776–1840), English painter William Sharp Bush (1786–1812), U.S. marine William Sharp Macleay (1792–1865), British entomologist William Sharp McKechnie (1863–1930), Scottish lecturer and author William Sharpe (disambiguation)