William Finley or Finlay may refer to:
- William Finlay (1853âÂÂ1914), Irish-born Canadian politician
- William Finlay (mayor) (1840âÂÂ1885), mayor of Albany, Western Australia
- William Finley (actor) (1940âÂÂ2012), American actor
- William Finley (Southern Railway), president of the Southern Railway in the United States, 1906âÂÂ1913
- William A. Finley (1839âÂÂ1912), president of Oregon State University, 1865âÂÂ1872
- William L. Finley (1876âÂÂ1953), American wildlife photographer and conservationist
- William Finlay, 2nd Viscount Finlay (1875âÂÂ1945), British barrister and judge
- William Henry Finlay, South African astronomer
- Willie Finlay (1926âÂÂ2014), Scottish footballer for East Fife and Clyde
Similar spellings