| Oxygen Web Solutions | Tehran |
| P.T.N. | Tehran |
| P30world | Tehran |
| Palladium Advertising Agency | Tehran |
| Pardis Technology Park | Tehran |
| ParmisIT | Tehran |
| Pars Data Corporation | Tehran |
| Pars Nemoodar Co. | Tehran |
| Parsa Institute of Higher Education | |
| ParsClick | Tehran |
| ParsCoders.com | Tehran |
| Parsian Data Process Group | Tehran |
| Parsian Institute of Higher Education | |
| ParsianHost | Tehran |
| ParsianMehr | Tehran |
| ParsianPortal | Tehran |
| Parsimap Intelligence | Tehran |
| Parsonline | Tehran |
| Parspake Digital Solutions | Tehran |
| Parstools | Tehran |
| Part Studio | Tehran |
| Partodadeh Co. | Tehran |
| Pasargad Electronic Payment | Tehran |
| Pasargad Financial Group Venture Capital | Tehran |
| Pasargad Institute of Higher Education | |
| Payam Golpayegan Institute of Higher Education | |
| Payam Noor University | |
| Payam Noor University - Khaf Unit | |
| Payame Noor University | |
| PayPing | Tehran |
| Pejvak ADSL | Tehran |
| Persian Designers | Tehran |
| Persian Gulf University | |
| Persiangig | Tehran |
| Persiantools | Tehran |
| PersiaTIC | Tehran |
| Persina | Tehran |
| Petiak System | Tehran |
| Petroleum University of Technology | |
| Piroozonline | Tehran |
| Pirozan Higher Education Institute | |
| Pishgaman Kavir Group | Tehran |
| Pishgamsoft | Tehran |
| Porteghal Accelerator | Tehran |
| Pushe.co | Tehran |
| Puyish Higher Education Institute | |
| PyCon Iran | Tehran |
| Qazvin Science & Technology Park | Qazvin |
| Qazvin Science and Technology Park | Qazvin |
| Qazvin University of Medical Sciences | |