| Osense Technology Co., Ltd | Taiwan |
| OT Systems Ltd | Hong Kong |
| Otek International, Inc. | Taiwan |
| OTR Therapeutics | |
| Otto International (Hong Kong) Ltd | |
| Oursky | Hong Kong |
| Outblaze Ltd | Hong Kong |
| Oversea-Chinese Banking Corporation Ltd | |
| Ozaki International | Taiwan |
| PA Tech Electronic Co., Ltd | Taiwan |
| PABLO AIR Co., Ltd | |
| Pacific DataCom (Hong Kong) Ltd | Hong Kong |
| Pacific GeneTech Ltd | Hong Kong |
| Pacific Meinuoke | Jiangsu |
| Pacific Professional Network | Hong Kong |
| Pacificnet Hosting Ltd | Hong Kong |
| Pagico | Beijing |
| Palan DataRx | |
| Palit Microsystems Ltd | Taiwan |
| Palm Garden Enterprises Corporation | Taiwan |
| Pan-China Electronic Co., Ltd | Shandong |
| Pan-International | Taiwan |
| PancoTech Automation Co., Ltd | |
| Pandaily | |
| Pangenia Lifescience | Hong Kong |
| Panion & BF Biotech, Inc. | |
| Panion & BF Biotech, Inc. | |
| Panjin Vocational & Technical College | |
| Panony | |
| PanPay Hong Kong Ltd | Hong Kong |
| Panram Co., Ltd | Taiwan |
| Paoyun Computing (Shanghai) Co., Ltd | Shanghai |
| Paper Scissors Stone Ltd | |
| PapiVax Biotech, Inc. | Taiwan |
| Paradigm Corporation Ltd | Hong Kong |
| Parcus Group | Hong Kong |
| ParticleX | Hong Kong |
| PatronSoft Ltd | Hong Kong |
| Pavi | Taiwan |
| PAX Global Technology Ltd | Hong Kong |
| PayEase | Beijing |
| Payton Technology | Guangdong |
| PC Stars Corporation | Beijing |
| PCBMay | |
| PCCW Enterprises Ltd | Hong Kong |
| PCCW Solutions Ltd | Hong Kong |
| PCDIY Media Corporation | Taiwan |
| PCHome | Taiwan |
| PCWay | Taiwan |
| Peak Force Systems Co., Ltd | |