| Rank | Abbreviation | Meaning |
|---|
| ***** | RETA | Real Estate Trust Account
| |
| *** | RETA | Refrigeration Engineers Technicians Association
| |
| *** | RETA | Remote Electrical Tilt Automatic
| |
| ** | RETA | Rural Economic Transition Assistance
| |
| ** | RETA | Registry for the Endovascular Treatment of Aneurysms
| |
| ** | RETA | recombinant exfoliative toxin A
| |
| ** | RETA | Real Estate Tax Associates
| |
| * | RETA | Responsible Electricity Transmission for Albertans
| |
| * | RETA | Research Evaluation and Technical Assistance
| |
| * | RETA | Regional Education Technology Assistance
| |
| * | RETA | Review of the Electricity Trading Arrangements
| |
| * | RETA | R. E. Timm and Associates
| |
| * | RETA | River Exe and Tributaries Association
| |
| * | RETA | Refrigeration Education Training Association
| |
| * | RETA | Reading Excellence Through the Arts
| |
| * | RETA | Régimen Especial Trabajadores Autónomos
| |
| * | RETA | Regional Environmental Technical Assistance
| |
| * | RETA | Regional Technical Assistance
| |
| * | RETA | Resource Estimation Tool for Advocacy
| |
| * | RETA | Regional Environment Technical Assistance
| |
| * | RETA | Regional Educational Technology Assistance
| |
| * | RETA | Retrieval of Enriched Textual Abstracts
| |
| * | RETA | RIGID EXPLOSIVE TRANSFER ASSEMBLY
| |
| * | RETA | Radio Experimenting and Testing Association
| |
| * | RETA | Regional Economic Transition Assistance
| |