| Duksan Techopia Co., Ltd | South Chungcheong |
| Dunamu, Inc. | Seoul |
| Duocom Industries, Inc. | Seoul |
| e-Smart Technologies, Inc. | |
| E.G.S. | South Chungcheong |
| Eastern Mastec Corporation | Gyeonggi |
| ECMiner Co., Ltd | Seoul |
| EditPlus | South Gyeongsang |
| Educloud | Seoul |
| Eduhash Global Partners Co., Ltd | Seoul |
| Eduventure, Inc. | |
| Eggverse, Inc. | |
| Ehost ICT Co., Ltd | Seoul |
| Electronic & Information Research Information Center. | |
| Eleparts | Seoul |
| Elpis Biotech, Inc. | Daejeon |
| Elpis-Biotech, Inc. | |
| EN technologies, Inc. | Seoul |
| Enage | Seoul |
| Encored, Inc. | Seoul |
| ENF Technology Co., Ltd | Gyeonggi |
| ENG Soft Co., Ltd | Seoul |
| Engsoft | Seoul |
| ENP Games | Seoul |
| Ensol Biosciences, Inc. | Daejeon |
| Entrue | Seoul |
| Envision Co, Ltd | Seoul |
| Enzychem Lifesciences Corporation | Seoul |
| EO Systems Co., Ltd | Incheon |
| EQ Global Co., Ltd | Gyeonggi |
| EQ Tech Plus Co., Ltd | Gyeonggi |
| Eromnet Co., Ltd | Seoul |
| ESTgames Corporation | Seoul |
| ESTsoft | Seoul |
| Ethertec, Inc. | Seoul |
| ETRI | Seoul |
| EuBiologics Co., Ltd | Seoul |
| Eutilex Co., Ltd | Seoul |
| Everspin Co., Ltd | Seoul |
| Ewha Woman's University | Seoul |
| Ewha Woman's University - Department of Mathematics | |
| Exicon | Gyeonggi |
| ExoCoBio | Seoul |
| Eye Max Co., Ltd | Busan |
| F1Security Corporation | Seoul |
| Fasoo.com | Seoul |
| Fast Track Asia Co., Ltd | Seoul |
| Federation of Korean Information Industries | Seoul |
| Feelatech Co., Ltd | Seoul |
| Fine Semitech Corporation | Gyeonggi |