| Acronym | Definition |
|---|
| RTIA | Right to Information Act, 2005 (India) |
| RTIA | Reno/Tahoe International Airport (Reno, NV, USA) |
| RTIA | Retail Technology Industry Association |
| RTIA | Regional Trade and Investment Area |
| RTIA | Regatta Time in Abaco (northern Bahamas) |
| RTIA | Receipts Taken Into Account |
| RTIA | Road Traffic Infringement Agency (South Africa) |
| RTIA | Regional Transportation Improvement Authority (Washington state) |
| RTIA | Radiation, Toxics, and Indoor Air (WV Office of Environmental Health Services division) |
| RTIA | Regional Trade and Investment Agreement |
| RTIA | Regional Telecommunications Infrastructure Account (Australia) |
| RTIA | Regional Tourism Industry Association (Canada) |
| RTIA | Risk Transfer Insurance Alliance, LLC |
| RTIA | Reactor Thermionic Ionization Analyzer |
| RTIA | Regional Traffic Impact Analysis |
| RTIA | Ratio Test Integer Aperture |
| RTIA | reactor thermionic ionization analysis |
| RTIA | Real-Time Information to Aircraft (US DoD) |
| RTIA | Robotic Technology Integration and Assessment |
| RTIA | Runtime Infrastructure Ambassador |
| RTIA | Recreational Trails of Illinois Act |
| RTIA | Rail Training Innovations Australasia |
