William McKinley (disambiguation)

William McKinley (1843–1901) was the president of the United States from 1897 to 1901.

William McKinley may also refer to:


 * William McKinley (Virginia politician) (fl. 19th century), U.S. Representative from Virginia (1810–1811)
 * William B. McKinley (1856–1926), U.S. Representative and Senator from Illinois
 * William Laird McKinlay (1889–1983), author of his own survivor's account of the Last voyage of the Karluk
 * William Michael McKinley (1879–1964), Speaker of the Illinois House of Representatives
 * William Thomas McKinley (1938–2015), American composer and jazz pianist
 * William McKinley Sr. (1807–1892), American manufacturer, father of President William McKinley
 * Bill McKinley (1910–1980), American baseball umpire in the American League, 1946–1965
 * Bill McKinley (footballer) (1882–1952), Australian rules footballer
 * Bill McKinley (American football) (born 1949), American football player for the 1971 Buffalo Bills