71st is the ordinal form of the number 71. 71st or Seventy-first may also refer to:
A fraction, , equal to one of 71 equal parts
Geography 71st meridian east, a line of longitude 71st meridian west, a line of longitude 71st parallel north, a circle of latitude 71st parallel south, a circle of latitude
Military 71st Group Army, People's Republic of China 71st Division (disambiguation) 71st Regiment (disambiguation)
Other 71st century 71st century BC
See also 71 (disambiguation)