| ICE Graphics | Saratov |
| ICL | |
| ICQ | Moscow |
| ID.World | |
| Idalgo | Krasnodar |
| iDealMachine | |
| IDLab | Moscow |
| Iesoft | Moscow |
| IIDF | Moscow |
| Illuzino- Shop | Moscow |
| Immanuel Kant Baltic Federal University | |
| IMPEX Design | Moscow |
| Inc. Russia | |
| Incarnet | |
| inClouds | Moscow |
| Independence Digital | |
| Independent Software Developers Forum | Moscow |
| Indiegameshop | Moscow |
| Indigo Byte Systems, LLC | Samara |
| Industrial Geodetic Systems R&D | Omsk |
| Inesoft | Khabarovsk |
| InfoCentre Internet Provider | Saint Petersburg |
| Information Service Systems Art | Omsk |
| Infoshell | |
| Ingate | Moscow |
| Inksystem | Moscow |
| Inline Telecom Solutions | Moscow |
| Inoventica Services | Moscow |
| Inreco LAN | |
| InsideSoft Co. | Moscow |
| Insight IT | |
| INSSMART | |
| Institue of Computational Technologies | Novosibirsk |
| Institute of Automation and Electrometry | Novosibirsk |
| Institute of Computer Science | Udmurt |
| Institute of Economics and Management in Industry | |
| Institute of Economics, Russian Academy of Sciences | |
| Institute of Nanotechnology Microelectronics of the Russian Academy of Sciences | |
| Institute of Problems of Mechanical Engineering of the Russian Academy of Sciences | |
| Institute of Scientific Information on Social Sciences | |
| Institute of the Information Society | Moscow |
| Integrosoft | Moscow |
| Intelcom-Connect | Moscow |
| Intella | |
| Intelligent Converters Ltd | Moscow |
| Intelligent Social System | Moscow |
| Intersoft Eurasia | |
| Intersputnik | |
| Intrum CRM | Moscow |
| INTS | Donetsk People's Republic |