| Computer Society of Iran | Tehran |
| COMSTECH Inter-Islamic Network on Virtual Universities | |
| Cortado | Tehran |
| CPEDS Software Group | Tehran |
| Cybertex System & Network Co. | Tehran |
| Dadehpardaz | Tehran |
| Dadekavan Computer Engineering Group | Tehran |
| Damavand Institute of Guidance Higher Education | |
| Damghan University | |
| Danesh Alborz University | |
| Daneshpajoohan Pishroo Higher Education Institute | |
| Daneshpajouhan Institute of Higher Education | |
| Dataak | Tehran |
| Dataecom | Tehran |
| Day | Tehran |
| Deylaman Institute of Higher Education | |
| Digi Alpha | Tehran |
| Digital Shift Solution | Tehran |
| Dima Software Group | |
| DMOND Accelerator | Tehran |
| Dr. Shariati Vocational and Technical Girls College | |
| East Azerbaijan Science & Technology Park | East Azerbaijan |
| East Azerbaijan Technical and Vocational University | |
| East Idea Data Processing, LLC | Tehran |
| Easy Computer Service Co. | Tehran |
| ebnetway | Tehran |
| EducationIRAN | |
| Elmosanat | Tehran |
| ePay | Tehran |
| Eqbal Lahoori Institute of Higher Education | |
| Eqlid Higher Education Center | |
| Eram Higher Education Institute | |
| Esfarayen University | |
| Eshragh Institute Of Higher Education | |
| ESMcell Technologies, Inc. | Tehran |
| Fanava | Tehran |
| Faraconesh Corporation | Tehran |
| Faran Mehr Danesh Higher Education Institute | |
| Faranam | Tehran |
| Farnaam | Tehran |
| Farsicom | Khorasan-e Razavi |
| FarsiReader | Tehran |
| Farvardin Institute of Higher Education | |
| Fasa University of Medical Sciences | |
| Fatemeh Institute of Higher Education | |
| Ferdows Institute of Higher Education | |
| Ferdowsi University of Mashhad | |
| Ferdowsi University of Mashhad - Department of Computer Engineering | Khorasan-e Razavi |
| Finnotech | Tehran |
| FreeDownload.ir | Tehran |