| AIMED BIO | |
| AirCUVE, Inc. | Seoul |
| AirenSoft Co., Ltd | Seoul |
| AirPoint | Daejeon |
| AIRS Medical, Inc. | Seoul |
| Aithe Nutrigene Co., Ltd | Seoul |
| AITRICS | |
| AIWEB Corporation | |
| AIZEN | Seoul |
| AJ Networks Corporation | Seoul |
| Ajinextek Co., Ltd | |
| Ajou Motor College | |
| Ajou University | Gyeonggi |
| Aju IB Investment Co., Ltd | Seoul |
| Aju Pharm Co., Ltd | Seoul |
| AL ROBOT | |
| Algesoft | |
| Algory Technology | Seoul |
| Aligned Genetics | |
| All-Teaching | Seoul |
| Alpha Motion Co., Ltd | |
| Alpinion Medical Systems Co., Ltd | Seoul |
| Altaplex Co., Ltd | Seoul |
| Alteogen, Inc. | Daejeon |
| Alticast Corporation | Seoul |
| Altoran Ventures | Seoul |
| Amolifescience | |
| Amolifescience | |
| Anam Electronics Co., Ltd | Seoul |
| Andong Science College | |
| ANP Corporation | Seoul |
| Ansan University | |
| AnyCert | Seoul |
| AP Systems | Gyeonggi |
| ApitBio | |
| Appia Engineering Co., Ltd | South Gyeongsang |
| Aprilbio | |
| Aprogen | |
| AptaBio | Gyeonggi |
| Aptamer Sciences, Inc. | |
| ARBORMED Co., Ltd | |
| ArchiLine Group Systems, Inc. | Seoul |
| AriBio | Gyeonggi |
| Arion Technology | Seoul |
| AroIntech Co., Ltd | Seoul |
| Asadal.com | Seoul |
| Ascendo Ventures | Seoul |
| Ascensive Assets | Seoul |
| ASE Korea, Inc. | Seoul |
| Asia LIFE University | |