UFN

UFN is an acronym for:


 * UFC Ultimate Fight Night, a mixed martial arts event held by Ultimate Fight Championship company
 * Uspekhi Fizicheskikh Nauk, Russian academical publication of Physics
 * Ucluelet First Nation, the treaty government of the Yuułuʔiłʔatḥ in the Canadian province of British Columbia
 * "United Federation of Nations", an episode of Code Geass: Lelouch of the Rebellion R2
 * Union des Femmes du Niger, a women's organisation in Niger active from 1959 to 1974