| Student Teacher Improving Relations | Academic & Science |
| Socio Technical Integration Research | Academic & Science |
| STI, Incorporated (de-listed) | Business |
| Short Term Interest Rate | Business |
| Seek To Improve Reliability | Business |
| Steps Towards Independence Responsibility | Community |
| Save The Ichetucknee River | Community |
| Steps Toward Independence and Responsibility | Community |
| Secure Telephony Identity Revisited | Computing |
| Standard Transverse Inversion Ratio | Electronics |
| Story Time For Independent Readers | General |
| Special Tool Inspection Report | General |
| Secure Telephone Identity Revisited | General |
| Separate Track and Illuminating Radar | General |
| Steps Toward Independence Responsibility | General |
| Supplemental Type Inspection Report | General |
| Special Technical Inspection and Repair | General |
| Sharing Talents Ideas and Resources | General |
| Short Term Incentives for Rental | General |
| Study Till It Resonates | General |
| Steps Towards Independence and Responsibility | General |
| Short T1 Inversion Recovery | General |
| Short Tau Inversion Recovery | General |
| Strategy Trust Ingenuity and Results | General |
| Soil Tillage Intensity Rating | General |
| Sustainable Transportation Initiative of Richmond | Governmental |
| Storytelling Through International Recipes | International |
| Short Tau Inversion Recover | Medical |
| Short T Inversion Recovery | Medical |
| Short TI Inversion Recovery | Medical |
| Strategy, Tactics, Implementation, and Review | Military and Defence |