| DBO Agency | Federal Capital Territory |
| Dbsoft | |
| Deejoft | |
| Delta State Polytechnic, Ogwashi-Uku | |
| Delta State Polytechnic, Otefe-Oghara | |
| Delta State Polytechnic, Ozoro | |
| Delta State University, Abraka Nigeria | |
| Dennis Osadebay University | |
| DesignMode | |
| Detacle Company | |
| Devand Agency | |
| Development Standards Technologies Ltd | |
| Devnode | |
| DevOne Net | |
| Devwares | Lagos |
| Diamond Software | |
| Diamond Web Design | |
| Digikraaft | |
| Digital Bridge Institute | Federal Capital Territory |
| Digital Girls | Federal Capital Territory |
| Digital Oxygen | |
| DigitalConnectInfra | |
| Digitify Solutions | |
| Digito Webs | |
| DigiWeb Developers | Imo |
| DiimTech | Lagos |
| Dixre Ltd | |
| Diyoktech Solutions | Lagos |
| Dleading Web Design Ltd | |
| Dnet Systems Ltd | Federal Capital Territory |
| DODO | |
| Dominican University, Ibadan | |
| Dominion Consulting | |
| Dominion University, Ibadan | |
| Donsoft Technology | |
| Dorben Polytechnic Abuja | |
| Dosbel | |
| Dptrax | |
| DPX Digital Network | |
| Dr. Yusufu Bala Usman College | |
| Dreamlabs Nigeria Ltd | Federal Capital Territory |
| Droomwork | Lagos |
| Dukka, Inc. | Lagos |
| Dwatil Africa | |
| E-Infotech | Rivers |
| E-pump | Lagos |
| Early Code Institute | |
| EarnIT Tech | |
| Eastern Polytechnic | Rivers |
| Ebenet Technologies | |