| PayMonths | Seoul |
| Peach Telecommunication & Computer, Inc. | Seoul |
| PeLeMed | |
| Pemtron Co., Ltd | Seoul |
| People Fund Company Co., Ltd | Seoul |
| Peptron | Daejeon |
| Petpeotalk Co., Ltd | Seoul |
| PharmAbcine | |
| PharmaResearch | |
| Pharmbio Korea Co., Ltd | Seoul |
| Pharos iBio Co., Ltd | Gyeonggi |
| PHPSchool | Seoul |
| PicPick | |
| PiLab | |
| PinotBio | Gyeonggi |
| PinTherapeutics | |
| Pixelity, Inc. | |
| Plan.H Ventures | |
| PlayKiKi, Inc. | |
| PODO Therapeutics | |
| Pohang Technopark | North Gyeongsang |
| Pohang University | |
| Pohang University of Science and Technology - Computer Science and Engineering | North Gyeongsang |
| Pohang University of Science and Technology - Department of Mathematics | North Gyeongsang |
| Portfolio | Seoul |
| Posco ICT | Seoul |
| Postech | |
| POSTECH Holdings Co., Ltd | |
| Prazer Therapeutics | |
| PRENEU Co., Ltd | |
| Prestige Biologics Co., Ltd | North Chungcheong |
| Prestosolution Ltd | Gyeonggi |
| Primer Season 5 Co., Ltd | |
| ProAbtech | |
| ProEn Therapeutics | |
| Prolangs, Inc. | Seoul |
| Protec Co., Ltd | Gyeonggi |
| Proteina | Seoul |
| Protia | |
| ProtoPie | |
| Provis Co., Ltd | Gyeonggi |
| PSMP Co., Ltd | |
| Psylogic Co., Ltd | |
| Publish, Inc. | |
| Pukyong National University | |
| Pusan National University | |
| Pusan National University - Department of Computer Science | Busan |
| Pycon Korea | Seoul |
| Pyeongtaek University | |
| Q Capital Partners | Seoul |