John Calhoun

John Calhoun may refer to:

  • John C. Calhoun, seventh Vice President of the United States, U.S. Senator
  • John Calhoun (software developer), American computer programmer
  • John B. Calhoun, psychologist noted for his 1947 Norway rat and 1970s mice population dynamic studies
  • John A. Calhoun, American diplomat
  • John C. Calhoun (Pittsburgh), Pittsburgh Police Chief
  • John Coleman Calhoun, politician in Alberta, Canada
  • John William Calhoun, mathematics professor, University of Texas comptroller and president