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

Sports

• Bill Barry (1899–1955), Australian rules footballer
• 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 (c. 1827–1900), 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)