William Fletcher
William Fletcher may refer to:
- William Fletcher (Irish judge), Irish politician and justice of the Court of Common Pleas
- William Fletcher (valet), servant of Lord Byron
- William A. Fletcher (Michigan judge), Chief Justice of the Michigan Supreme Court
- William Fletcher (English politician), British Member of Parliament for Cockermouth, 1879–80
- William Roby Fletcher, English-born Australian Congregational minister and Vice-Chancellor of the University of Adelaide
- William I. Fletcher, American librarian, bibliographer and indexer
- William Fletcher (engineer), British author and steam traction engine designer
- William Fletcher (rugby union), English rugby international
- William Fletcher (priest), Welsh Anglican priest
- William Bartlett Fletcher Sr., admiral in the United States Navy
- William Fletcher (cricketer), English cricketer for Yorkshire
- William Fletcher (rower), English rower and coach
- William Fletcher (physician), English doctor
- William Whigham Fletcher, Scottish botanist
- William Thomas Fletcher, American mathematician
- William A. Fletcher, United States federal appeals court judge
- Will Fletcher, British rower
Fictional characters
- Billy Fletcher, a fictional character in the British soap opera Emmerdale
- Will Fletcher (The Bill), a fictional character in ''The Bill''