| CHINA AEROSPACE-HUAWEI (HK) SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ASDOPTICS (HK) SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Howard (HK) Science & Technology Co., Limited | Private company limited by shares | Live |
| SKYVIEW (HK) SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Lexiang (HK) Science and Technology Holding Limited | Private company limited by shares | Live |
| MING JIE (H.K) SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| H.K. FIRST SCIENCE AND TRADE CO., LIMITED | Private company limited by shares | Dissolved |
| River Moistening Woods Science and Technology (HK) Company Limited | | Live |
| Yung Sun Science (HK) Limited | Private company limited by shares | Live |
| ZHIXIANG DIGITAL SCIENCE (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Hoen Life Science Group Limited | Private company limited by shares | Live |
| HONG KONG AMAN SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONG KONG CHENSHENG SCIENCE LIMITED | Private company limited by shares | Live |
| Hong Sheng Electronics Science Co., Limited | Private company limited by shares | Live |
| HONG KONG FU JI SCIENCE INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| HONG KONG JIULONG NEW SCIENCE CO., LIMITED | Private company limited by shares | Live |
| AF SCIENCE (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| SCG Science (Hong Kong) Co., Limited | Private company limited by shares | Live |
| DUOLOGIC SCIENCE (HONG KONG) CORPORATION LIMITED | Private company limited by shares | Dissolved |
| HONG KONG DAGUYI SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG DATA SCIENCE ASSOCIATION LIMITED | Private company limited by shares | Live |
| HONG KONG DENTAL SCIENCE ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| HONG KONG DEZHONG SCIENCE AND TECHNOLOGY COMPANY, LIMITED | Private company limited by shares | Dissolved |
| HONG KONG DIGICAS SCIENCE CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Science Education Technology Limited | | Live |
| LEAD ELECTRONIC SCIENCE (HONG KONG) CO. LIMITED | Private company limited by shares | Live |
| Hong Kong DJY Electronic Science And Technology Limited | Private company limited by shares | Live |
| Hong Kong Association for Science and Engineering Limited | Private company limited by shares | Live |
| SCIENCE ESTHETICS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Science Fair Limited | Private company limited by shares | Live |
| HONG KONG FENG LU HUA SCIENCE & BUSINESS COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Science Focus Company Limited | Private company limited by shares | Live |
| FUTURE SCIENCE &. TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Global Science Co., Limited | | Live |
| Holland Green Science Hong Kong Limited | | Live |
| HONG KONG JIABEIXI BIO SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| SCIENCE PUBLISHING GROUP (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Haishese Science and Technology Limited | Private company limited by shares | Live |
| HANHAI SCIENCE & TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Health Engineering Science Company Limited | Private company limited by shares | Live |
| Hong Kong Health Science Limited | Private company limited by shares | Live |
| NMN (Hong Kong) Health Science Limited | Private company limited by shares | Live |
| HONG KONG HIGHLY SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live Commenced dormancy on 02-Aug-2001 |
| SCIENCE (HONG KONG) HOLDING LIMITED | | Live |
| HONG KONG HTYD SCIENCE & TECHNOLOGY LIMITED | | Live |
| HONG KONG INFINITY SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONG KONG INSTITUTION OF SCIENCE LIMITED -THE- | Company limited by guarantee | Live |
| Creditable (Hong Kong) Science Instrument Limited | Private company limited by shares | Live |
| HONG KONG YOUNG SCIENCE INSTRUMENT LIMITED | Private company limited by shares | Live |
| Integral Ad Science Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG SCIENCE KAOLIN COMPANY LIMITED | Private company limited by shares | Live |
| SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ABC SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Live |
| M Science Hong Kong Limited | Private company limited by shares | Live |
| GS SCIENCE (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Science Sun (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG SCIENCE LAB LIMITED | | Live |
| HONG KONG SCIENCE LAB LIMITED | | Live |
| Brewer Science Hong Kong Limited | Private company limited by shares | Live |
| China Science and Research Hong Kong Company Limited | Private company limited by shares | Live |
| ELEMENT SCIENCE HONG KONG LIMITED | Private company limited by shares | Live |
| Fibrocell Science Hong Kong Limited | Private company limited by shares | Dissolved |
| HAPPY SCIENCE HONG KONG LIMITED | Company limited by guarantee | Live |
| Science City (Hong Kong) Investment Co. Limited | Private company limited by shares | Live |
| Ocean Science (Hong Kong) Limited | Private company limited by shares | Live |
| SCIENCE & RESEARCH (HONG KONG) LIMITED | Private company limited by shares | Live |
| Tea Science Society of Hong Kong Limited | Private company limited by shares | Live |
| Chubb (Hong Kong) science tech Limited | Private company limited by shares | Live |
| EXCELLENT SCIENCE AND TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| GENERAL (HONG KONG) SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Mano Science Technology (Hong Kong) Limited | Private company limited by shares | Live |
| Mr. Science Technology & Media (Hong Kong) Limited | Private company limited by shares | Live |
| TOP VIEW SCIENCE & TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Life Science Consultant Limited | | Live |
| HONG KONG PU YIN LIFE SCIENCE LIMITED | Private company limited by shares | Live |
| In Hong Kong Life Science Limited | Private company limited by shares | Live |
| EZZ (Hong Kong) Life Science Limited | | Live |
| Hong Kong master science and technology Limited | | Live |
| MPORE (HONG KONG) MATERIAL SCIENCE LIMITED | Private company limited by shares | Live |
| HONG KONG MCKEY SCIENCE AND TECHNOLOGY COMPANY LIMITED | | Live |
| Hong Kong MedPure Life Science Limited | Private company limited by shares | Live |
| HONG KONG GOLD META SCIENCE LIMITED | Private company limited by shares | Dissolved |
| MOGE SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Ngongfull Science and Technology Limited | Private company limited by shares | Live |
| Hong Kong Northern Science Company Limited | | Live |
| HONG KONG INSTITUTION OF OPTOELECTRONICS SCIENCE LIMITED | Company limited by guarantee | Live |
| PACIFIC SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Science of Parenting Association Limited | | Live |
| PROVISIONAL HONG KONG SCIENCE PARK COMPANY LIMITED | Private company limited by shares | Dissolved |
| PERBIO SCIENCE HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Perpetual Science and Technology Limited | Private company limited by shares | Live |
| HONG KONG POLITICAL SCIENCE ASSOCIATION LIMITED | Company limited by guarantee | Live |
| PROTEC SCIENCE HONG KONG LIMITED | | Live |
| Hong Kong Ralon Medical & Science Limited | Private company limited by shares | Live |
| HONG KONG RENXIA SCIENCE LIMITED | Private company limited by shares | Live |
| Hong Kong Science Research Limited | Private company limited by shares | Live |
| HONG KONG SENGE SCIENCE LIMITED | Private company limited by shares | Live |
| SHENG HUA SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG SINO-ASIA SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Hong Kong Social Science Association Limited | Private company limited by shares | Live |