John Beatty may refer to:
- John Beatty (Continental Congress) (1749–1826), American Revolutionary War officer, delegate to Continental Congress, New Jersey congressman
- John Beatty (Ohio banker) (1828–1914), U.S. Congressman, Civil War Union general
- John Beatty (philosopher) (born 1951), University of British Columbia philosopher of biology
- John Beatty (illustrator) (born 1961), American comics illustrator
- John Lee Beatty, American scenic designer
- J. W. Beatty (John William Beatty, 1869–1941), Canadian painter
- John Louis Beatty (1922–1975), American writer and professor
- John K. Beatty (c. 1821–?), Irish uilleann piper