| VP Co., Ltd | Seoul |
| VRISM, Inc. | |
| VSPharmTech | |
| Vuno Co., Ltd | Seoul |
| Wantedlab, Inc. | Seoul |
| Ware Valley Co., Ltd | Seoul |
| Watchtek Co., Ltd | Seoul |
| Wavebridge Corporation | Seoul |
| We Do Soft, Inc. | Seoul |
| Web Design Korea | Seoul |
| Web2gether Co., Ltd | Seoul |
| Webcash Co., Ltd | Seoul |
| Webheads Co., Ltd | Seoul |
| WebhostingKorea.net | Seoul |
| Webis | Gwangju |
| WebTeam | Seoul |
| Webzen, Inc. | Seoul |
| WECO Co., Ltd | |
| Weidmüller Korea Co., Ltd | Seoul |
| Wellmarkerbio | |
| Wemade Entertainment Co., Ltd | Gyeonggi |
| Wens | Gyeonggi |
| Wezon Co., Ltd | Seoul |
| WhaTap | Seoul |
| WHOIS Corporation | Seoul |
| Whykeykeysoft, Inc. | Seoul |
| Widebrain, Inc. | |
| Widtech Co., Ltd | Daejeon |
| Wiki Security Corporation | Seoul |
| Windmillsoft Co., Ltd | Seoul |
| Winningi Co., Ltd | Seoul |
| Wins | Seoul |
| Wintec | Seoul |
| Wiple Games, Inc. | Seoul |
| Wise App/Retail/Goods | Gyeonggi |
| With Brother | Seoul |
| WIZ Communications | Seoul |
| WIZnet Co., Ltd | Gyeonggi |
| WONIK Co., Ltd | Gyeonggi |
| Wonik Holdings | Gyeonggi |
| Wonkwang Health Science University | |
| Wonkwang University | |
| Woongji Accouting & Tax College | |
| Woori Electronics Industrial.Co., Ltd | Seoul |
| Wooridul Spine Hospital | |
| Wooshin Venture Investment Corporation | Seoul |
| Woosong University | |
| Woosuk University | |
| WOR-PRO | |
| Wowsoft, Inc. | Seoul |