Twentieth is the ordinal form of the number 20.
Twentieth or 20th may also refer to:
A fraction, , equal to one of 20 equal parts 20th of the month, a recurring calendar date 20th anniversary
Geography 20th meridian east, a line of longitude 20th meridian west, a line of longitude 20th parallel north, a circle of latitude 20th parallel south, a circle of latitude 20th Avenue (disambiguation) 20th Street (disambiguation)
Military Twentieth Army (disambiguation) 20th Battalion (disambiguation) 20th Brigade (disambiguation) 20th Corps (disambiguation) 20th Division (disambiguation) 20th Group (disambiguation) 20th Lancers (disambiguation) 20th Regiment (disambiguation) 20th Squadron (disambiguation)
Other Twentieth Amendment (disambiguation) Twentieth Amendment to the United States Constitution 20th century 20th century BC 20th Century Studios, formerly 20th Century Fox, an American film studio owned by The Walt Disney Company
See also 20 (disambiguation) 20s 20th Anniversary, 2006 smooth jazz album by The Rippingtons