| Acronym | Definition |
|---|
| RTA➣Rapid Transit Authority |
| RTA➣Ready-To-Assemble (product) |
| RTA➣Regional Transit Authority |
| RTA➣Regional Transportation Authority (Chicago, IL, USA) |
| RTA➣Restricted To Adults |
| RTA➣Greater Cleveland Regional Transit Authority |
| RTA➣Road Traffic Accident |
| RTA➣Reply to All (email) |
| RTA➣Royal Tongan Airlines |
| RTA➣Roads and Traffic Authority (Australia) |
| RTA➣Return to Australia |
| RTA➣Rewriting Techniques and Applications |
| RTA➣Residential Tenancies Act (various locations) |
| RTA➣Real Time Analyzer |
| RTA➣Registered Training Organisation (Australia) |
| RTA➣Renal Tubular Acidosis |
| RTA➣Residential Tenancies Authority (Australia) |
| RTA➣Relaxation Time Approximation (statistical mechanics) |
| RTA➣Road to Avonlea |
| RTA➣Real-Time Access (software) |
| RTA➣Read the Article |
| RTA➣Road Traffic Act (Northern Ireland) |
| RTA➣Run Time Analysis |
| RTA➣Real Time Data Acquisition |
| RTA➣Real Time Access |
| RTA➣Returning to Application |
| RTA➣Reply to All |
| RTA➣Real Time Agent |
| RTA➣Run Time Application |
| RTA➣Response Time Analyzer |
| RTA➣Run Time Access |
| RTA➣Response Time Accelerator |
| RTA➣Repeat to Address |
| RTA➣Real Time Architect |
| RTA➣Rapid Thermal Annealing |
| RTA➣Rio Tinto Aluminium (various locations) |
| RTA➣Race Team Alliance |
| RTA➣Royal Thai Army |
| RTA➣Referring Travel Agent |
| RTA➣Regional Trade Agreement |
| RTA➣Return to Agency |
| RTA➣Revue Technique Automobile (French: Automotive Technology Magazine) |
| RTA➣Retired Teachers Association |
| RTA➣Railway Tie Association |
| RTA➣Registrar/Transfer Agent |
| RTA➣Radio Television Afghanistan |
| RTA➣Road & Traffic Authority |
| RTA➣Real Time Accounting |
| RTA➣Research Technical Assistance |
| RTA➣Resident Twinning Advisor |
| RTA➣Required Time of Arrival |
| RTA➣Resort Travel Agency |
| RTA➣Research and Technology Agency (NATO) |
| RTA➣Road Transport Association |
| RTA➣Recognised Testing Authority (telecommunications; National Association of Testing Authorities; Australia) |
| RTA➣Read to Achieve |
| RTA➣Real-Time Adjudication (health care claims) |
| RTA➣Regional Trading Arrangement |
| RTA➣Riverside Transit Authority |
| RTA➣Rochester Teachers Association (Rochester, NY) |
| RTA➣RoadTrip America |
| RTA➣Response Time Analysis |
| RTA➣Remember the Alamo |
| RTA➣Rapid Type Analysis |
| RTA➣Receiver-Transmitter Antenna |
| RTA➣Remote Trunk Arrangement |
| RTA➣Ricin Toxin A |
| RTA➣Remix Technology Award |
| RTA➣Russell Trust Association (aka Yale's Skull and Bones Society) |
| RTA➣Rail Tours Austria |
| RTA➣Roads and Transportation Authority (United Arab Emirates) |
| RTA➣Radio-Télévision Algérienne (Algeria) |
| RTA➣Records & Tax Administration (Olathe, KS) |
| RTA➣Revolutionary Turbine Accelerator |
| RTA➣Ragnarok: the Animation (game) |
| RTA➣Régie des Transports de l'Aisne (French: Transport Authority of Aisne; Aisne, France) |
| RTA➣Retention 'Til Access (memory access technology) |
| RTA➣Round Trip Average (computer data transfer speed) |
| RTA➣Ready-To-Advertise |
| RTA➣Rotor Test Apparatus |
| RTA➣Restructuring The Army |
| RTA➣Réseau Transnational Atlantique (French: Atlantic Transnational Network) |
| RTA➣Recommendation to Award |
| RTA➣Range & Training Area (USMC) |
| RTA➣Return to Archive |
| RTA➣Related Technical Activities |
| RTA➣Resident Technical Assistant (various universities) |
| RTA➣Residual Threat Assessment |
| RTA➣Right Torsion of the Abomasum |
| RTA➣Responsible Test Agency |
| RTA➣Retired Troopers Association |
| RTA➣Remote to AFOS |
| RTA➣Runestone Telephone Association |
| RTA➣Risk Task Assessment (Health, Safety and Environmental Codes of Practice) |
| RTA➣Regional Trade Associations/Alliances |
| RTA➣Regional Transportation Alignment (merchandising) |
| RTA➣Ray-Tracing Approach |
| RTA➣Reusable Testing Assets |
| RTA➣Receiver Transmitter Assembly |
| RTA➣Random Task Arrival |
| RTA➣Recreation Therapy Assistant |
| RTA➣Revised Time of Arrival |
| RTA➣Requirements Traceability Analysis |
| RTA➣Reverse Transfer Arc |
| RTA➣Recovery Time Achievable |