159th is the ordinal form of the number 159. 159th or One hundred and fifty-ninth may also refer to:
A fraction, , equal to one of 159 equal parts
Geography 159th meridian east, a line of longitude 159th meridian west, a line of longitude 159th Street (Chicago) 159th Street (Manhattan)
Military 159th Brigade (disambiguation) 159th Division (disambiguation) 159th Regiment (disambiguation)
See also
June 8, 159th day of the year in a standard year