William Fletcher may refer to:William Fletcher (1750–1823), Irish politician and justice of the Court of Common Pleas William Fletcher (valet), servant of Lord Byron William A. Fletcher (1788–1852), Chief Justice of the Michigan Supreme Court William Fletcher (1831–1900), British Member of Parliament for Cockermouth, 1879–80 William Roby Fletcher (1833–1894), English-born Australian Congregational minister and Vice-Chancellor of the University of Adelaide William I. Fletcher (1844–1917), American librarian, bibliographer and indexer William Fletcher (engineer) (1848–1918), British author and steam traction engine designer William Fletcher (1851–1895), English rugby international William Fletcher (priest), Welsh Anglican priest William Bartlett Fletcher Sr. (1862–1957), admiral in the United States Navy William Fletcher (cricketer) (1866–1935), English cricketer for Yorkshire William Fletcher (rower) (1869–1919), English rower and coach William Fletcher (physician) (1872–1938), English doctor William Whigham Fletcher (1918–2001), Scottish botanist William Thomas Fletcher, American mathematician William A. Fletcher, United States federal appeals court judge Will Fletcher, British rower