William Barker
William Barker may refer to:
Politicians
- William Barker (translator), English translator and MP for Great Yarmouth and Bramber
- William Barker (MP for Berkshire), English Member of Parliament for Berkshire
- Sir William Barker, 5th Baronet, British Member of Parliament for Ipswich, Thetford and Suffolk
- William Barker (Queensland politician), member of the Queensland Legislative Council
- William J. Barker (Denver mayor), American politician
Judges
- William J. Barker, American lawyer and judge
- William M. Barker, Chief Justice of the Tennessee Supreme Court from 1995 to 2009
Sportspeople
- William Barker (Surrey cricketer), English cricketer
- William Barker (tennis), British tennis player
- Billy Barker (footballer, born 1883), footballer for Middlesbrough F.C. in the early 20th century; see List of Middlesbrough F.C. players
- Bill Barker (footballer), footballer who played for Stoke City
- Will Barker (American football), American football player
Religion
- William Barker (priest, died 1776), Irish priest, Dean of Raphoe
- William Barker (priest, died 1917), Dean of Carlisle
- William Morris Barker, American bishop of the Episcopal Diocese of Olympia
Others
- William Barker (chemist), Irish professor of chemistry
- William Barker (prospector), English miner and prospector who found gold in Canada
- William Burckhardt Barker, English orientalist
- William George Barker, Canadian Victoria Cross recipient and World War I flying ace
- William Gibbs Barker, English clergyman and genealogist
- William Higgs Barker, English Hebraist
- William Robert Barker, Australian botanist
- William S. Barker, American church historian, educator, and leader
- Will Barker (director), aka William George Barker, English film producer and director
- Bill Barker, creator of Schwa, underground conceptual artwork
- Bill Barker, police officer who died in the November 2009 Great Britain and Ireland floods, namesake of Barker Crossing
- Bill Barker, actor who portrayed Dr. Duckbill Platypus and Elsie Jean Platypus on ''Mister Rogers' Neighborhood''