Twelfth can mean: The Twelfth Amendment to the United States Constitution The Twelfth, a Protestant celebration originating in Ireland Twelfth of the month, a recurring calendar date Twelfth grade, in education
Mathematics 12th, an ordinal number; as in the item in an order twelve places from the beginning, following the eleventh and preceding the thirteenth , a vulgar fraction, one part of a unit divided equally into twelve parts
Music The note twelve scale degrees from the root (current note, in a chord) Twelfth (interval)
Currency Uncia (coin), a Roman coin worth 12th of an As
Geography 12th meridian east, a line of longitude 12th meridian west, a line of longitude 12th parallel north, a circle of latitude 12th parallel south, a circle of latitude 12th Avenue (disambiguation) 12th Street (disambiguation)
Military 12th Army (disambiguation) 12th Battalion (disambiguation) 12th Brigade (disambiguation) 12th Division (disambiguation) 12th Regiment (disambiguation) 12th Squadron (disambiguation)
See also 12 (number) 12th century 12th century BC Twelfth Amendment (disambiguation) Eleventh (disambiguation) Thirteenth (disambiguation)