| Acronym | Definition |
|---|
| RTCA➣Rivers Trails and Conservation Assistance (National Park Service) |
| RTCA➣Radio Technical Commission for Aeronautics |
| RTCA➣Rio Tinto Coal Australia |
| RTCA➣Requirements and Technical Concepts for Aviation |
| RTCA➣Rural Training Council of Australia |
| RTCA➣Real Time Casualty Assessment |
| RTCA➣Radon Testing Corporation of America |
| RTCA➣Rat Terrier Club of America |
| RTCA➣Rail Technology Cluster Austria |
| RTCA➣Radio-Television Correspondents Association |
| RTCA➣Round Table Coordinating Assembly |
| RTCA➣Race Track Chaplaincy of America, Inc. |