William Barry may refer to:
Politics Dick Barry (1926–2013), Speaker of the Tennessee House of Representatives William T. Barry (1784–1835), politician from Kentucky and Postmaster General under Andrew Jackson William S. Barry (1821–1868), American politician from Mississippi Bill Barry (politician) (1899–1972), member of the Victorian Legislative Assembly William Bernard Barry (1902–1946), politician from New York
Religion William Francis Barry (1849–1930), British Catholic priest, theologian, educator and writer William Barry (bishop), DD (1872–1929), Archbishop of Hobart, Tasmania William Barry (Congregationalist) (1805–1885), American Congregational pastor and author William Lloyd Barry (1916–1999), member of the Governing Body of Jehovah's Witnesses and related offices
Sports Bill Barry (1899–1955), Australian rules footballer Ray Barry (ice hockey) (William Raymond Barry, 1928–2018), American-born Canadian hockey player William Barry (footballer) (1929–2007), Irish footballer William L. Barry (born 1940), British rower and coach
Other William Gerard Barry (1864–1941), Irish artist William R. Barry (1828–1900), American businessman and advocate for the deaf William J. Barry (born 1943), Irish phonetician William Farquhar Barry (1818–1879), U.S. Army officer in the Mexican–American and American Civil wars William Jackson Barry (1819–1907), New Zealand adventurer and writer
See also William Parry (disambiguation)