RAR

RAR or Rar may refer to:


 * Radio acoustic ranging, a non-visual technique for determining a ship's position at sea
 * "rar", the ISO 639-2 code for the Cook Islands Māori language
 * RAR (file format), a proprietary compressed archive file format in computer software
 * Rarotonga International Airport, Cook Islands, IATA code RAR
 * Rarus, or Rar, a figure in Greek mythology
 * Retinoic acid receptor, a type of protein
 * Rhodesian African Rifles, a unit of the Rhodesian Army
 * Rock Against Racism, a UK movement
 * Rock am Ring and Rock im Park, a German rock music festival
 * Royal Australian Regiment, a unit of the Australian Army
 * Ruger American Rifle, a line of centerfire bolt-action rifles
 * Grupo RAR, a Portuguese company
 * WinRAR, RAR, and UNRAR computer software for compressed archive files
 * Ridotto Alpino Repubblicano, Republican Alpine Redoubt (RAR), intended last stronghold of the Italian fascists at the end of World War II
 * Rarh region, region in eastern India