Mitty may refer to:

  • Archbishop Mitty High School, a high school in San Jose, California
  • John Joseph Mitty, fourth Archbishop of the Archdiocese of San Francisco
  • Walter Mitty, a fictional character in James Thurber's short story "The Secret Life of Walter Mitty"
  • Joe Mitty, a British salesman and founder of the first Oxfam charity shop in the United Kingdom in 1949
  • The Secret Life of Walter Mitty, a short story by James Thurber in 1941
  • The Secret Life of Walter Mitty (film), a 1947 comedy film, loosely based on the short story of the same name by James Thurber
  • The Secret Life of Walter Mitty (2009 film), an upcoming film being produced by 20th Century Fox, written by Jay Kogen and directed by Mark Waters
  • Buck Mitty, a fictional character appearing in the Marvel Comics universe, who was the senior entomology professor at ESU.
  • Mitty, Guinea