| Informacija.rs | Belgrade |
| Informacione Tehnologije d.o.o. | Belgrade |
| Informatika a.d. | Belgrade |
| InfoSky | Belgrade |
| Infostud 3 d.o.o. | North Bačka |
| Ingsoftware | |
| Innovigo | |
| INOVIA | Belgrade |
| Inssio Solutions d.o.o. | |
| Institut za nuklearne nauke ”Vinča” | |
| Institut za onkologiju i radiologiju Srbije | |
| Institute Mihailo Pupin | Belgrade |
| Intelligent Technologies | |
| Intens | South Bačka |
| Internacionalni univerzitet u Novom Pazaru | Raška |
| Internet Agencija WS9 | |
| Internet Ogledalo | Belgrade |
| Internet Prezentacije | Belgrade |
| InternetProstor | South Bačka |
| Intro Web Dizajn Studio | Belgrade |
| Inviggo | |
| ION Solutions | South Bačka |
| IP Communication | Belgrade |
| iSolutions d.o.o. | Belgrade |
| IT Centar | |
| IT Engine | South Bačka |
| ITkutak.com | Belgrade |
| ITsvet.com | Belgrade |
| Ivan Lazarevic | Belgrade |
| Just Creative Agency | |
| justLikeAPI | Belgrade |
| JКП „Инфoрмaтикa“ Нoви Сaд | South Bačka |
| K7 Tech | |
| K7 Tech Agency | Belgrade |
| Kabi d.o.o. | Belgrade |
| Kaph Visual Communication d.o.o. | South Bačka |
| Katalog d.o.o. | Belgrade |
| KimTec | Belgrade |
| Kiwi Mobility | Belgrade |
| Kodvel | Rasina |
| Kolosek | |
| KompArt Agencija | Belgrade |
| Kompjuter Biblioteka | Belgrade |
| Konsing Group | Belgrade |
| konstrukt.rs | Belgrade |
| Kosmo Group | Kolubara |
| Krojač d.o.o. | Belgrade |
| kT dizajn | Belgrade |
| Labnet | Belgrade |
| LakoDoSajta.com | Belgrade |