FRR
FRR stands for:
- False rejection rate, a term used in biometrics
- The IATA code of the airport Front Royal - Warren County
FR -R stands for:
- Pays de la Loire, ISO -3166 -2 code of the French region
Frr is:
- The language code for the North Frisian language according to ISO 639-3
- Disambiguation
- Abbreviation