2/11 may refer to: February 11 (month-day date notation) November 2 (day-month date notation) February 11 AD (month-year date notation) 2 AD November (year-month date notation) 2nd Battalion, 11th Marines, an artillery battalion of the United States Marine Corps See also 11 (disambiguation) 2 (disambiguation) 211 (disambiguation) 11/2 (disambiguation) 112 (disambiguation)