John Barr

John Barr may refer to:
 * John W. Barr (1826–1907), U.S. federal judge
 * John Barr (Canadian politician) (1843–1909), Canadian physician and politician
 * John Barr (New Zealand politician) (1867–1930), member of the New Zealand Legislative Council
 * John Barr (poet) (1809–1889), New Zealand poet
 * John Barr (basketball) (1918–2002), American basketball player
 * John Barr (shinty) (born 1982), Scottish shinty player
 * John Barr (footballer, born 1885) (1885–after 1906), Scottish footballer (Grimsby Town)
 * John Barr (footballer, born 1917) (1917–1977), Scottish footballer
 * John Barr (librarian) (1887–1971), New Zealand librarian
 * John E. Barr (1913–2010), member of the Governing Body of Jehovah's Witnesses and related offices
 * John Barr, president of Poetry Foundation
 * John Barr, a fictional character and namesake of the Jonbar hinge concept