| STACS | Safety Training and Consulting Services 
| Others |
| STACS | Social Therapeutic and Community Studies
| Others |
| STACS | St Thomas Aquinas Catholic School
| Others |
| STACS | Standing Trustee Alliance for Computer Security
| Others |
| STACS | Stylistics Text Analysis and Cognitive Science
| Others |
| STACS | Subtropical Atlantic Climate Studies
| Others |
| STACS | Symposium on Theoretical Aspects of Computer Science
| Others |