| Innovative Systems Ltd | Lagos |
| iNove Media | Lagos |
| Institute of Ecumenical Education Enugu | |
| Integraflow | |
| Integrated Software Services Ltd | |
| IntelApe | |
| Intelia | Lagos |
| Interbound | Federal Capital Territory |
| Interlink Polytechnic Ijebu-Jesa | |
| Internet Exchange Point of Nigeria | Lagos |
| Internet Society Nigeria Chapter | Lagos |
| Internet Solutions Nigeria Ltd | Lagos |
| Interra Networks | Federal Capital Territory |
| Interswitch Ltd | Lagos |
| Intuitive Global Healthcare | |
| Intuitive Technology Services International | Lagos |
| InvoiceApp, Inc. | |
| ipNX Nigeria Ltd | Lagos |
| IQ Systems Solutions Ltd | |
| ISPON | Lagos |
| iSquare Digitals | |
| IT Horizons | |
| Itanna | Lagos |
| ITHEIR | |
| ITRDN Technologies Ltd | Lagos |
| ITRealms Online | Lagos |
| ITSkillsCenter | |
| IXNote | |
| J-Mouse Technologies Ltd | Edo |
| Jaflah Software Development Company | |
| Jagora Integrated Services | |
| JAM-FORTE Technologies | |
| Jamesgab | |
| JE Tech Ltd | |
| Jidaw Systems | Lagos |
| Jigawa State Polytechnic, Dutse | |
| JITSolutions | |
| Jobberman | Lagos |
| Joseph Ayo Babalola University, Osun State | |
| Joseph Sarwuan Tarka University | |
| Joseph Sarwuan Tarkaa University, Makurdi | |
| Jrango Technology | |
| JTec Solutions | Lagos |
| Jumia | Lagos |
| Jumia Nigeria | |
| Juray Smart Solutions Ltd | |
| Just Electon | |
| Kaduna Polytechnic | |
| Kaduna State University | |
| Kajab Engineering Services | |