URF

URF may refer to:


 * Ultra Rapid Fire, a special game mode in League of Legends
 * Unidentified reading frame, an open reading frame in DNA sequences
 * Union of Right Forces, Russian liberal democratic political party (1999-2008)
 * University Radio Falmer, student radio station for the University of Sussex
 * University Research Fellowship of the Royal Society
 * Urf, Arabic Islamic term referring to the custom, or 'knowledge', of a given society
 * URF (Swedish Navy) or Ubåtsräddningsfarkosten, a Swedish submarine rescue vessel