Look up 81st in Wiktionary, the free dictionary.
81st is the ordinal form of the number 81. 81st or Eighty-first may also refer to:
- A fraction, 1⁄81, equal to one of 81 equal parts
Geography
edit- 81st meridian east, a line of longitude
- 81st meridian west, a line of longitude
- 81st parallel north, a circle of latitude
- 81st parallel south, a circle of latitude
- 81st Street (disambiguation)
Military
editOther
editSee also
edit- 81 (disambiguation)
- The 81st Blow , 1974 Israeli documentary film
This disambiguation page lists articles associated with the same ordinal.
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