RAR

RAR or Rar may refer to:

Radial acceleration relation (RAR), a relation derived from studying the radial acceleration traced by rotation curves in galaxies
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