11/9 may refer to:

  • November 9, US and Asian style date
  • Fahrenheit 11/9, an American documentary film
  • September 11, used in the day-month-year stylization of dates
  • The September 11 attacks, a series of four coordinated terrorist attacks in the United States of America on September 11, 2001
  • September, 2011; see 2011
  • November, 2009; see 2009
  • September, 11 A.D.; see AD 11
  • November, 9 A.D.; see AD 9
  • 11 shillings and 9 pence in UK predecimal currency
  • "11/9", an episode of American Horror Story: Cult

See also

  • September 11 attacks (disambiguation)
  • 119 (disambiguation)
  • 9/11 (disambiguation)