| Semnan University | |
| Sepahan Institute of Higher Education | |
| Sepanta | Tehran |
| Sepehr Institute of Higher Education | |
| Sepehr S. T. Co., Ltd | Tehran |
| Sepehrfazar | |
| Shabakieh | Isfahan |
| Shafagh University of Tonekabon | |
| Shahed University | |
| Shaheed Rajaie Cardiovascular Medical & Research Institute | |
| Shahid Ashrafi Isfahani Non Profit University | |
| Shahid Ashrafi University of Isfahani | |
| Shahid Bahonar University of Kerman | |
| Shahid Bahonar University of Kerman - Faculty of Mathematics and Computer | Kerman |
| Shahid Beheshti University of Medical Sciences | |
| Shahid Motahari University | |
| Shahid Rajaee Teacher Training University | |
| Shahrekord University | |
| Shahrekord University of Medical Sciences | |
| Shahrood University | |
| Shahrood University of Technology | |
| Shams Institute of Science and Technology | |
| Shandiz Higher Education Institute of Mashhad | |
| Sharif Accelerator | Tehran |
| Sharif Science and Technology Park | Tehran |
| Sharif University of Technology | Tehran |
| Sharif University of Technology - Computer Engineering Department | Tehran |
| Sharif University of Technology - Department of Computer Engineering | Tehran |
| Sharif University of Technology - Department of Mathematical Sciences | Tehran |
| Sharif University of Technology Branch | |
| Sharif Venture Capital Fund | Tehran |
| Shatel | Tehran |
| Sheikhbahaee University | |
| Shetab | Tehran |
| Shiraz Institute of Higher Education | |
| Shiraz University of Medical Scences | |
| Shiraz University of Technology | |
| Shomal University | |
| Silk Road Startup | Tehran |
| Siraj Institute of Higher Education | |
| Sirang | Tehran |
| Sirjan University of Technology | |
| Sobhan Institute of Higher Education | |
| Supreme National Defense University | |
| System Group | Tehran |
| Tabaran Insitute of Higher Education | |
| Tabari Institute of Higher Education | |
| TabliQ.com | Tehran |
| Tabriz Islamic Art University | |
| Tabriz University of Medical Sciences | |