TRA
TRA is an abbreviation for:
- Taiwan Railway Administration, Railway Administration of the Republic of China on Taiwan
- Taiwan Relations Act, enacted by the U.S. Congress Act
- Technical rules for lifts
- Telecommunications Regulatory Authority, Bahrain's Telecommunications Regulatory Authority
- Temporary Reserved Airspace, airspace, which only briefly - is locked - eg for mil exercises
- Theory of Reasoned Action by Martin Fishbein & Ajzen Icek
- Audio frequency ripple control systems, see ripple control technology, radio ripple control technology
- Transavia Airlines, Dutch airline by the ICAO code
- Threat and risk assessment
TrA is an abbreviation for:
- Triangulum Australe, Constellation Southern triangle in the nomenclature of the fixed stars
- Disambiguation
- Abbreviation