| Abbreviation | Definition |
|---|---|
| STC | Spiral Tool Corporation |
| STC | Standard Triumph Company |
| STC | State Trading Corporation of India |
| STC | Swank Technical Communications |
| STC | SWIFT Trucking Co. |
| STCB | State Trading Corporation of Bhutan |
| STCL | Spices Trading Corporation Ltd |
| STCSA | State Theatre Company of South Australia |
| STD | Software Tool and Die |
| STD | Split-The-Difference (Never split-the-Difference Price-setting) |
| STD | Stuart Tyrrell Developments (Company) |
| STDC | Sindh Transmission and Dispatch Company |
| STDC | South Tipperary Development Company |
| STDC | State Tourism Development Corporation (India) |
| STE | Symbol Technologies Europe |
| STEP | Science and Technology Entrepreneur's Park |
| STFA | Swamp Tour Founders Association |
| STFC | Shriram Transport Finance Company |
| STFC | Source Total Fitness Center |
| STFU | Southern Texas Fertilizer Unlimited |