William Sharpe may refer to:
William Sharpe (burgess), served in the Virginia House of Burgesses, 1629
William Sharpe (governor) (fl. 1710), governor of Barbados
William Sharpe (North Carolina politician) (1742–1818), delegate to the Continental Congress from North Carolina
William Sharpe (MP) (1834–1909), British politician
William Henry Sharpe (1868–1942), merchant and political figure in Manitoba, Canada
William Percy Sharpe (1871–1942), American Democratic politician serving as mayor of Nashville
William Sharpe (surgeon) (c. 1882-1960), a brain surgeon who developed treatment for retardation and palsy in children
William Sharpe (Alberta politician) (1887–1964), provincial politician from Alberta, Canada
William Sharpe (footballer) (fl. 1890), English footballer
William C. Sharpe, American cultural historian
William R. Sharpe Jr. (1928–2009), member of the West Virginia Senate
William F. Sharpe (born 1934), Nobel Prize-winning economist
William Frederick Nelson Sharpe Canadian aviation pioneer who died during WWI on Feb 4 1915