AUR, or aur, may refer to:
- Acute urinary retention
- African Union of Railways
- Alliance for Romanian Unity
- Alliance for the Union of Romanians
- American University of Rome
- Arch User Repository
- Aur Atoll, Marshall Islands
- Auriga constellation abbreviation, as standardized by the International Astronomical Union
- Aur Island, Malaysia
- AUR, the IATA code for A. A. Bere Tallo Airport in East Nusa Tenggara, Indonesia
- AUR, the National Rail code for Aberdour railway station in Scotland, UK
- "AUR" is a Pakistani music band formed by Ahad, Usama, and Raffey.