William Barr may refer to:
- William Barr (politician) (born 1950), 77th Attorney General of the United States
- William Barr (Arctic historian), Arctic historian at the University of Calgary, Canada
- William Barr (artist), early 20th Century California artist
- Billy Barr, English footballer and coach
- William Barr (Spanish Texas merchant), co-founder of House of Barr and Davenport
Famous quotes containing the words william and/or barr:
“The desire to take medicine is perhaps the greatest feature which distinguishes man from animals.”
—Sir William Osler (1849–1919)
“Events that are predestined require but little management. They manage themselves. They slip into place while we sleep, and suddenly we are aware that the thing we fear to attempt, is already accomplished.”
—Amelia E. Barr (1831–1919)