| SIST | Sarabhai Institute of Science and Technology 
| Others |
| SIST | School of Information Science and Technology
| Others |
| SIST | Shizuoka Institute of Science and Technology
| Others |
| SIST | Skolkovo Institute of Science and Technology
| Others |
| SIST | Society for Imaging Science & Technology
| Others |
| SIST | Strict and Intensive Supervision and Treatment
| Others |
| SIST | Summer Internships in Science and Technology
| Others |
| SIST | Summer Internships in Science Technology
| Others |