UCAR
Ucar or UCAR may refer to:
- University Corporation for Atmospheric Research, a U.S. organization of atmospheric research institutions
- Unmanned Combat Armed Rotorcraft, a United States pilotless attack helicopter, currently under development
- Ujar Rayon, a province in Azerbaijan
- Ucar, Azerbaijan, capital of that region
- Úcar, a municipality in the province of Navarre, Spain
- Uçar, Turkish surname
- U-Car, a type of race car built from stock parts