57th is the ordinal form of the number 57. 57th or Fifty-seventh may also refer to:
A fraction, , equal to one of 57 equal parts
Geography 57th meridian east, a line of longitude 57th meridian west, a line of longitude 57th parallel north, a circle of latitude 57th parallel south, a circle of latitude 57th Street (disambiguation)
Military 57th Brigade (disambiguation) 57th Division (disambiguation) 57th Regiment (disambiguation) 57th Squadron (disambiguation)
Other 57th century 57th century BC
See also 57 (disambiguation) 57th & 9th, 2016 album by British singer-songwriter Sting