William Quinn

William Quinn may refer to:


 * Bill Quinn (1912-1994), American film actor
 * Liam Quinn (born 1949), a.k.a. William Quinn, member of the Provisional IRA
 * William Quinn (actor) (1884–1965), Canadian film and stage actor
 * William F. Quinn (1919–2006), governor of Hawaii
 * William J. Quinn (1883–1963), chief of police in San Francisco, California
 * William John Quinn (1911–2015), railroad executive
 * William P. Quinn (1900–1978), Garda Commissioner
 * William Paul Quinn (1788–1873), bishop of the African Methodist Episcopal Church
 * William Wilson Quinn (1907–2000), Chevalier Lieutenant General, commanding general of the Seventh United States Army