59th is the ordinal form of the number 59. 59th or Fifty-ninth may also refer to:
A fraction, , equal to one of 59 equal parts
Geography 59th meridian east, a line of longitude 59th meridian west, a line of longitude 59th parallel north, a circle of latitude 59th parallel south, a circle of latitude 59th Street (disambiguation) 59th Street station (disambiguation)
Military 59th Army (disambiguation) 59th Brigade (disambiguation) 59th Corps (German Empire) 59th Division (disambiguation) 59th Quartermaster Company, U.S. Army 59th Regiment (disambiguation) 59th Squadron (disambiguation) 59th Medical Wing, U.S. Air Force
Other 59th century 59th century BC
See also 59 (disambiguation) Fifty-Niner, nickname for gold seekers in western Kansas Territory and southwestern Nebraska Territory in 1859