Office of Rail regulations

Views Updated: Dec 15, 2025

Key Facts

Abbreviation

ORR

Pronunciation

/ˈɔfəs əv reɪl ˌrɛgjəˈleɪʃənz/

Category

Regional

Related Field

Railroads

Other meanings of ORR

Objective Response Rate Gov

Oxidation-Reduction Reaction Academic

Oxygen Reduction Reaction Misc

Operational Readiness Review Gov

Office of Refugee Resettlement Gov

Operations Requirements Review Gov

Office of Rail Regulation Business

Old Rochester Regional Regional

Oriental Rug Review Community

Offshore Racing Rule Sports