RAR
- Cook Islands Māori
- Galaxy rotation curve
- Grupo RAR
- RAR (file format)
- Radio acoustic ranging
- Rarh region
- Rarotonga International Airport
- Rarus
- Retinoic acid receptor
- Rhodesian African Rifles
- Ridotto Alpino Repubblicano
- Rock Against Racism
- Rock am Ring and Rock im Park
- Royal Australian Regiment
- Ruger American Rifle
- WinRAR