72nd is the ordinal form of the number 72. 72nd or Seventy-second may also refer to:
A fraction, , equal to one of 72 equal parts
Geography 72nd meridian east, a line of longitude 72nd meridian west, a line of longitude 72nd parallel north, a circle of latitude 72nd parallel south, a circle of latitude 72nd Street (disambiguation)
Military 72nd Group Army, People's Republic of China 72nd Brigade (disambiguation) 72nd Division (disambiguation) 72nd Regiment (disambiguation)
Other 72nd century 72nd century BC
See also 72 (disambiguation)