| Kakao Corporation | Gyeonggi |
| Kakao Enterprise Corporation | Gyeonggi |
| Kakao Games Corporation | Gyeonggi |
| Kakao Investment Co., Ltd | |
| Kakao Mobility Corporation | Gyeonggi |
| KANAPH Therapeutics, Inc. | |
| Kangnam University | |
| Kangstem Biotech | Seoul |
| Kangwon National University | |
| Kangwon National University - Mathematics | Gangwon |
| Kaya University | |
| Kaywon University of Art & Design | |
| KB Data Systems | Seoul |
| KBench | Seoul |
| KDI School of Public Policy and Management | |
| KDL Computer Forensic, Inc. | Seoul |
| KEC Holdings | Seoul |
| Keimyung College University | |
| Keimyung University | |
| KEPCO | |
| Ketco, Inc. | Gyeonggi |
| Keypair | Seoul |
| KG Mobilians | Seoul |
| KICA, Inc. | Gyeonggi |
| KIMGISA Lab | |
| Kimpo University | |
| Kine Sciences | Seoul |
| Kingsley Ventures | Seoul |
| Kingsley Ventures | |
| KINX, Inc. | Seoul |
| KIOST | Busan |
| Kipco Radar & Aerospace Co., Ltd | |
| Kissmac | Seoul |
| KITE Entrepreneurship Foundation | Daejeon |
| KITECH | |
| Kmong, Inc. | |
| KNET Co., Ltd | Seoul |
| KNIGHTNET | Seoul |
| KnowWhereSoft | Gyeonggi |
| Kobiolabs | Gyeonggi |
| KOCN, Inc. | Seoul |
| KOCW | Daegu |
| KogeneBiotech | |
| Koh Young Technology, Inc. | Seoul |
| KOISRA Seed Partners | Seoul |
| KOISRA Seed Partners Startup Accelerator | Seoul |
| Koiware Co., Ltd | Seoul |
| Kolon Life Science Co., Ltd | Seoul |
| Kolon Pharma | |
| Kongju National University | |