William Pennington (disambiguation)

William Pennington (1796–1862) was an American politician who served as Governor of New Jersey and Speaker of the House.

William Pennington may also refer to:


 * William Sanford Pennington (1757–1826), American politician and judge, father of the above
 * William George Pennington, 19th-century Australian politician
 * William Henry Pennington (1833-1923), British soldier and actor
 * William Pennington (businessman) (1923–2011), American casino executive