| Payame Noor University | |
| PayPing | Tehran |
| PayPing | Tehran |
| Pejvak ADSL | Tehran |
| Persian Designers | Tehran |
| Persiangig | Tehran |
| Persiantools | Tehran |
| PersiaTIC | Tehran |
| Persina | Tehran |
| Petiak System | Tehran |
| Piroozonline | Tehran |
| Pirozan Higher Education Institute | |
| Pishgaman Kavir Group | Tehran |
| Pishgamsoft | Tehran |
| Porteghal Accelerator | Tehran |
| Pushe.co | Tehran |
| PyCon Iran | Tehran |
| Qazvin Science & Technology Park | Qazvin |
| Qazvin Science and Technology Park | Qazvin |
| Quera | Tehran |
| RaasCo | Tehran |
| Ravand Tazeh, Inc. | Tehran |
| Rayaneh | Tehran |
| Rayanehmag.net | Tehran |
| Rayvarz | Tehran |
| RighTel Communications | Tehran |
| Royal Web | Tehran |
| Royan Institute | |
| Rushdieh Institute of Higher Education | |
| Sabanet | Tehran |
| Sabz Institute of Higher Education | |
| Sadra Institute of Higher Education | |
| Sakha Ravesh Co. | Tehran |
| Salman Institute of Higher Education | |
| Samangan Institute of Higher Education | |
| Samasoft | Tehran |
| Samix | Tehran |
| Sana Institute of Higher Education | |
| Sanabad Golbahar Insitute of Higher Education | |
| Sarava | Tehran |
| Saroyeh Institute of Higher Education | |
| SarvCRM | Tehran |
| SASite.net | Tehran |
| Sefr-Yek | Tehran |
| Semnan Science and Technology Park | Semnan |
| Sepanta | Tehran |
| Sepehr S. T. Co., Ltd | Tehran |
| Shabakieh | Isfahan |
| Shafagh University of Tonekabon | |
| Shahid Ashrafi Isfahani Non Profit University | |