| CleverAds | Hanoi |
| Cloudjet KPI | Ho Chi Minh City |
| Cloudteam Co., Ltd | Ho Chi Minh City |
| CMC Corporation | |
| CMC Global | Hanoi |
| CMC Telecom | Hanoi |
| Cmsmart | Hanoi |
| Co-Well Asia Co., Ltd | Hanoi |
| Code Tốt | |
| CodeLink Ltd | |
| CoderSchool | Ho Chi Minh City |
| Computer Vision Vietnam | Hanoi |
| Cổng thông tin điện tử Thành phố Thái Nguyên | |
| Công ty TNHH Máy tính Xách tay Bảo Huy | Ho Chi Minh City |
| COTIEN | Ho Chi Minh City |
| CrystalSound | Ho Chi Minh City |
| DAC Tech Việt Nam JSC | Da Nang |
| Dalat University | |
| Dallmeier Việt Nam | Da Nang |
| DaMi Software Solution | Ho Chi Minh City |
| DeeDee Animation Studio | Hanoi |
| DEHA Digital Solutions | |
| Derasoft | Ho Chi Minh City |
| Designveloper | |
| DevSamurai | Ho Chi Minh City |
| DFJ VinaCapital | Ho Chi Minh City |
| Dicom Interactive | |
| Digi-Texx | |
| Digital Fortress Co., Ltd | |
| Digital Systems Co., Ltd | Ho Chi Minh City |
| Digiworld | Ho Chi Minh City |
| Diplomatic Academy of Vietnam | |
| Dirox | Ho Chi Minh City |
| District2 | Ho Chi Minh City |
| DNK Software | Hanoi |
| Dong Nai University | |
| Dong Nai University of Technology | |
| Dongthap University | |
| Door Creative | |
| DragonLend | Ho Chi Minh City |
| Dreamplex | Ho Chi Minh City |
| DS Solution Vietnam JSC | |
| DTN Ecom Co., Ltd | |
| Duyet | |
| DuyTan University | |
| Dwarves, LLC | Ho Chi Minh City |
| DXTech JSC | |
| EAERA | |
| Earth Venture Capital | |
| East Asia University of Technology | |