| Imam Sadiq University - Women's Campus | |
| Iman Khomeini Education & Research Institute | |
| Imantech Co. | Tehran |
| Informatics Soceity of Iran | Tehran |
| Information Technology Organization | Tehran |
| Institute for Advanced Studies in Basic Sciences | |
| Institute for Cognitive Science Studies | |
| Institute for Color Science and Technology | |
| Institute for Research and Planning in Higher Education | |
| Institute for Research in Fundamental Sciences | Tehran |
| Institute for Research in Fundamental Sciences - Mathematics | Tehran |
| Institute for Research in Fundamental Sciences - School of Computer Science | Tehran |
| Insurance Research Center | |
| INTECH Information Technology Development | |
| Inten web design | Tehran |
| Iran - Ministry of I.C.T. | Tehran |
| Iran Applied Informatics Scientific Center | |
| Iran Apps | Tehran |
| Iran Computer Emergency Response Team | Tehran |
| Iran International Innovation District | |
| Iran National Foundation of Computer Game | Tehran |
| Iran Network Information Center | Tehran |
| Iran Rayaneh Co. | Tehran |
| Iran Telecom Innovations | Tehran |
| Iran University of Art | |
| Iran University of Science & Technology | |
| Iran University of Science & Technology - School of Computer Engineering | Tehran |
| Iran University of Science & Technology - School of Electrical Engineering | Tehran |
| Iran University of Science & Technology - School of Mathematics and Computer Science | Tehran |
| Irancell | Tehran |
| Irandisk | Tehran |
| IranDNN | Tehran |
| Iranet | Tehran |
| Irangate | Tehran |
| Iranhost | Tehran |
| Iranian Academic Center for Education Culture & Research | |
| Iranian Applied Data Processing Scientific Center | |
| Iranian e-Commerce Development Co. | Tehran |
| Iranian eUniversity | |
| Iranian Research and Academic NETwork | Tehran |
| Iranian Research Institute for Information Science and Technology | Tehran |
| Iranian Research Organization for Science and Technology | |
| Iranian Society of Cryptology | Tehran |
| Iranian Space Agency | Tehran |
| IranOCR.ir | Razavi Khorasan |
| Iranshahr University of Medical Sciences and Health Services | |
| IranWebs | Tehran |
| IranWebService Corporation | Tehran |
| IRNIC | Tehran |
| IRPower | Tehran |