NLF

NLF may stand for:
 * National Liberation Front, name used by various independence groups, paramilitary organizations, and political parties in different countries
 * National Liberation Front of Yemen, which eventually became the main force behind the creation of the Yemeni Socialist Party
 * Viet Cong, officially the National Liberation Front for South Vietnam, which existed from 1960 to 1977
 * National Labour Federation (Pakistan)
 * National Liberal Federation, organization of the British Liberal Party, 1877–1936
 * National Labor Federation in Eretz-Israel, a national trade union center in Israel
 * Natural laminar flow, an airfoil characteristic researched by Michimasa Fujino
 * New Legislative Framework, legislation aiming to improve the internal market of the European Union
 * New Life Fellowship Church (Vietnam)
 * Non-lactose fermenter, a type of bacterium that grows in Sorbitol-MacConkey agar
 * Nuclear Liabilities Fund, a UK body funding nuclear decommissioning
 * Darnley Island Airport, IATA airport code "NLF"