| Easy Study Limited | Private company limited by shares | Dissolved |
| Ocean Education Study Abroad Centre Limited | Private company limited by shares | Live |
| STUDY POWER EDUCATION CENTER LIMITED | Private company limited by shares | Dissolved |
| CHINA PARENT EDUCATION STUDY LIMITED | Private company limited by shares | Live |
| ALL STUDY EDUCATION ASSOCIATION CO., LIMITED | Private company limited by shares | Live |
| STUDY & SUN EDUCATION HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Study Mind Education Centre Limited | Private company limited by shares | Live |
| Eplus Study Limited | Private company limited by shares | Live |
| European Study Limited | Private company limited by shares | Live |
| Eventus Study Tours Limited | Private company limited by shares | Live |
| Executive Study Group Limited | Private company limited by shares | Live |
| Fabulous Study Limited | Private company limited by shares | Live |
| FIRST STUDY LIMITED | Private company limited by shares | Live |
| STUDY FUNDING ASIA LIMITED | Private company limited by shares | Dissolved |
| Study Games Limited | Private company limited by shares | Live |
| HK GLOBAL STUDY ABROAD SERVICE LIMITED | Private company limited by shares | Live |
| Global Study Consultancy Limited | Private company limited by shares | Live |
| GLOBAL STUDY GROUP LIMITED | Private company limited by shares | Live |
| PROTOUR GLOBAL STUDY LIMITED | Private company limited by shares | Live |
| GOOD AT STUDY LIMITED | Private company limited by shares | Live |
| GOOD STUDY NETWORK TECHNOLOGY LIMITED | | Live |
| Tim Study Group Limited | Private company limited by shares | Dissolved |
| USE STUDY GROUP LIMITED | Private company limited by shares | Live |
| USA STUDY ABROAD EMIGRANT SERVICE GROUP LIMITED | Private company limited by shares | Dissolved |
| Study Group (Hong Kong) Limited | Private company limited by shares | Dissolved |
| STUDY, RESEARCH & INVESTMENT GROUP (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Study Mark Group Limited | Private company limited by shares | Live |
| Study Overseas Group Limited | Private company limited by shares | Live |
| STUDY GROWTH EDUCATION CENTER LIMITED | Private company limited by shares | Live |
| HONG KONG BUDDIST STUDY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Oncology Study Group Limited | Company limited by guarantee | Live |
| Hong Kong Bay Overseas Study Immigration Limited | | Live |
| Hong Kong MGS Overseas Study Company Limited | Private company limited by shares | Live |
| HONG THAI STUDY TOUR CENTRE LIMITED | Private company limited by shares | Live |
| Hong Kong XiMao overseas study Limited | | Live |
| HUATUO DIFFICULT DISEASES STUDY LIMITED | Private company limited by shares | Live |
| STUDY TOUR INFINITY LIMITED | Private company limited by shares | Dissolved |
| Study Ireland Limited | Private company limited by shares | Live |
| Joy and Study Journey Limited | | Live |
| Study Land Limited | Private company limited by shares | Live |
| Britannia Study Link (Asia) Limited | Private company limited by shares | Live |
| ASIA STUDY LINKS LIMITED | Private company limited by shares | Dissolved |
| CENTRE FOR THE STUDY OF LITERACY LIMITED | Private company limited by shares | Dissolved |
| LOK-YEE STUDY TOUR LIMITED | | Live |
| Study Mate Limited | Private company limited by shares | Live |
| OUTSTANDING CHINESE STUDY MEETING LIMITED | Private company limited by shares | Dissolved |
| STUDY METHODS LIMITED | Private company limited by shares | Dissolved |
| STUDY MISSION LIMITED | Company limited by guarantee | Live |
| ONLINE STUDY LIMITED | Private company limited by shares | Dissolved |
| STUDY ONLINE LIMITED | Private company limited by shares | Dissolved |
| STUDY OVERSEAS LIMITED | Private company limited by shares | Live |
| YINUO EDUCATION OVERSEAS STUDY LIMITED | Private company limited by shares | Live |
| HK MeiOu Immigration & Overseas Study Consultant Limited | Private company limited by shares | Live |
| SCHOLARS OVERSEAS STUDY LIMITED | Private company limited by shares | Dissolved |
| I. STUDY PUBLISHING LIMITED | Private company limited by shares | Live |
| Sakura Study Limited | Private company limited by shares | Live |
| HOPE Study Abroad Service HK Limited | | Live |
| SHANGHAI AMERICA STUDY ABROAD CO., LIMITED | Private company limited by shares | Live |
| Smart Study Company Limited | Private company limited by shares | Dissolved |
| Smart Study Limited | | Live |
| U.S.A TAI LI ORGANISMS TECHNOLOGY STUDY INSTITUTIONS LIMITED | Private company limited by shares | Live |
| New Study Tour Limited | Private company limited by shares | Dissolved |
| STUDY TOUR 365 LIMITED | Private company limited by shares | Live |
| ORCA STUDY TOURS LIMITED | Private company limited by shares | Live |
| CHILL STUDY TRAVEL LIMITED | | Live |
| NEW DISCOVERY STUDY TRAVEL LIMITED | | Live |
| TRUMAN STUDY CENTER LIMITED | Private company limited by shares | Dissolved |
| Angel (UK) Study Centre Limited | Private company limited by shares | Live |
| U-TOUR OVERSEAS STUDY CONSULTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| VIETNAM SNACKS STUDY ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| STUDY VISA (USA) LIMITED | Private company limited by shares | Dissolved |
| Study With Me Limited | Private company limited by shares | Live |
| STUDY WORK & TRAVEL GROUP LIMITED | Private company limited by shares | Dissolved |
| Yeah Study Limited | Private company limited by shares | Live |
| PUI YING STUDY CENTRE LIMITED | Private company limited by shares | Dissolved |
| Study Zone Limited | Private company limited by shares | Live |
| Studycat Limited | Private company limited by shares | Live |
| STUDYFINDER LIMITED | Private company limited by shares | Dissolved |
| Study-finder.com Limited | | Live |
| Studyfreely Limited | Private company limited by shares | Dissolved |
| STUDYFUN EDUCATION GROUP LIMITED | Private company limited by shares | Dissolved |
| StudyHo Limited | Private company limited by shares | Live |
| Studyhub HK Limited | Private company limited by shares | Live |
| HONG KONG BUDDHISM STUDYING LIMITED | Private company limited by shares | Live |
| LEVEL UP STUDYING SERVICE LIMITED | Private company limited by shares | Live |
| Studynet Group Limited | Private company limited by shares | Live |
| STUDYOW LIMITED | Private company limited by shares | Live |
| STUDYPUG (HK) LIMITED | Private company limited by shares | Live |
| STUDYPUG HOLDING (HK) LIMITED | Private company limited by shares | Live |
| STUDYROAD (OVERSEAS) LIMITED | Private company limited by shares | Dissolved |
| STUDYSEARCH LIMITED | Private company limited by shares | Dissolved |
| STUDYSTREAM LIMITED | Private company limited by shares | Live |
| Studyvip Online Education HK Limited | Private company limited by shares | Live |
| STUDYWIZ LIMITED | Private company limited by shares | Dissolved |
| STUDY-Z LIMITED | Private company limited by shares | Live |