William Woodruff (disambiguation)

William Woodruff (1916–2008) was a world historian and author.

William Woodruff may also refer to:


 * William E. Woodruff (politician) (1795–1885), American politician and publisher
 * William E. Woodruff (soldier) (fl. 1855–1863(, American lawyer and colonel in the Union Army during the American Civil War
 * William Woodruff (Upper Canada politician) (1793–1860), Canadian merchant and politician