William Arthur may refer to:
William Arthur (botanist) (1680–1716), Scottish botanist William Arthur (clergyman) (1796–1875), American Baptist minister and father of Chester A. Arthur William Arthur (minister) (1819–1901), Irish Methodist minister William Evans Arthur (1825–1897), American politician William Arthur (Royal Navy) (1830–1886), British naval officer William Hemple Arthur (1856–1936), American general William Arthur (mathematician) (1894–1979), Scottish mathematician Bill Arthur (William Tevlin Arthur, 1918–1982), Australian politician W. Brian Arthur (born 1945), Irish economist
See also
William Arthur Memorial Church, Gubbi, India William, Prince of Wales (William Arthur Philip Louis; born 1982), heir apparent of Charles III, King of the United Kingdom