Fifth is the ordinal form of the number five.
Fifth or The Fifth may refer to:
Fifth Amendment to the United States Constitution, as in the expression "pleading the Fifth"Fifth column, a political termFifth disease, a contagious rash that spreads in school-aged childrenFifth force, a proposed force of nature in addition to the four known fundamental forcesFifth (Stargate), a robotic character in the television series Stargate SG-1Fifth (unit), a unit of volume used for distilled beverages in the U.S.Fifth-generation programming languageThe fifth in a series, or four after the first: see ordinal numbers (linguistics)1st Battalion 5th MarinesA quintile, or 20%A fraction, such as 1/5The royal fifth (Spanish and Portuguese), an old royal tax of 20%