| STDA | Scrap Tire Disposal Account 
| Others |
| STDA | Screening Test of Developmental Abilities
| Others |
| STDA | Scuba Training Development Academy
| Others |
| STDA | Selenium Tellurium Development Association
| Others |
| STDA | Simple Tools for Data Analysis
| Others |
| STDA | Simplified Tamm Dancoff Approximated
| Others |
| STDA | Societe Togolaise de Distribution Automobile
| Others |
| STDA | Societe Tregoroise de Distribution Automobile
| Others |
| STDA | Societe Tunisienne de Distribution Automobile
| Others |
| STDA | Street Talk Directory Assistance
| Others |