| Rank | Abbreviation | Meaning |
|---|
| ***** | STDA | Sonar Tactical Decision Aid
| |
| *** | STDA | Selenium Tellurium Development Association
| |
| *** | STDA | Sensor Tactical Decision Aid
| |
| *** | STDA | Steward's Assistant
| |
| *** | STDA | Science and Technology for the Development of Africa
| |
| *** | STDA | Stochastic Time Demand Analysis
| |
| *** | STDA | Strategic Tourism Development Areas
| |
| ** | STDA | Streettalk Directory Assistance
| |
| ** | STDA | Substituição Tributária e ao Diferencial de Alíquota
| |
| ** | STDA | Sustainable Tourism Development Associates
| |
| ** | STDA | Scrap Tire Disposal Account
| |
| ** | STDA | Sangrado de Tubo Digestivo Alto
| |
| ** | STDA | Supplemental Tax Deferred Annuity
| |
| * | STDA | Saskatchewan Training and Development Association
| |
| * | STDA | Synchronous Time Domain Averaging
| |
| * | STDA | Single Target Detection Algorithm
| |
| * | STDA | Stellar Team Diagnostic Assessment
| |
| * | STDA | Self-Titled Debut Album
| |
| * | STDA | Solar Terrestrial Data Archive
| |
| * | STDA | Street Talk Directory Assistance
| |
| * | STDA | Satellite Towns Development Agency
| |
| * | STDA | Solution Treating and Double Aging
| |
| * | STDA | Street Talk Dirrectory Assistance
| |
| * | STDA | Solution Treated and Double Aged
| |
| * | STDA | s StreetTalk Directory Assistance
| |