| QUAD LIMITED | Private company limited by shares | Dissolved |
| QUAD LIMITED | Private company limited by shares | Live |
| Quad One Limited | Private company limited by shares | Live |
| QUAD ALLIANCES BROKERS LIMITED | Private company limited by shares | Live |
| QUAD AUTOMATIC MACHINERY LIMITED | Private company limited by shares | Live |
| QUAD JOLLY CONSULTANCY LIMITED | Private company limited by shares | Live |
| Quad Consulting Initiatives Limited | Private company limited by shares | Live |
| QUAD CONTINENTS LIMITED | | Live |
| QUAD DESIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUAD DIMENSION IT CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| K Quad Design and Engineering Consultancy Limited | Private company limited by shares | Live |
| QUAD ENTERPRISES LIMITED | Private company limited by shares | Live |
| QUAD INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Quad Hong Kong Limited | Private company limited by shares | Dissolved |
| Quad Interiors Limited | Private company limited by shares | Live |
| QUAD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| QUAD CAPITAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| QUAD PUBLISHERS LIMITED | Private company limited by shares | Dissolved |
| QUAD SHIELD LIMITED | Private company limited by shares | Live |
| QUAD STAR LIMITED | Private company limited by shares | Live |
| Quad Studio Limited | Private company limited by shares | Live |
| TEAM QUAD LIMITED | Private company limited by shares | Dissolved |
| Quad Digital Tech Limited | Private company limited by shares | Live |
| QUAD TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| QUAD MTL TRADING LIMITED | Private company limited by shares | Live |
| NORTH AMERICA QUAD TRAVEL AND TOURS LIMITED | Private company limited by shares | Dissolved |
| QUADACAST SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| QUADBLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Quad-C KAI Greater China Limited | Private company limited by shares | Dissolved |
| Quadcell Communications Limited | Private company limited by shares | Live |
| QUADCONN INC. LIMITED | Private company limited by shares | Dissolved |
| QUAD-D LIMITED | Private company limited by shares | Live |
| QUAD-D CAPITAL LIMITED | Private company limited by shares | Live |
| QUADDRIX TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| QUADDRO LIMITED | Private company limited by shares | Live |
| QUADETE (ASIA PACIFIC) COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADFAME INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| QUADFIELD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Quadfirm (H.K) Co., Limited | Private company limited by shares | Live |
| Quadima Limited | Private company limited by shares | Live |
| QUADLER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QUADLINK CONSULTANCY LIMITED | Private company limited by shares | Live |
| Quadnergy & Company Limited | | Live |
| QUADNOVATION ASIA LIMITED | Private company limited by shares | Live |
| Quadone (Hong Kong) Limited | Private company limited by shares | Live |
| QUADPACK HK LIMITED | Private company limited by shares | Live |
| QUADPLEX LIMITED | Private company limited by shares | Dissolved |
| QUADPLEX LIMITED | Private company limited by shares | Live |
| QUADPONT LIMITED | Private company limited by shares | Dissolved |
| QuadPro Limited | Private company limited by shares | Live |
| Quad-Profit Limited | Private company limited by shares | Live |
| QUADRA LIMITED | Private company limited by shares | Dissolved |
| QUADRA HK LIMITED | Private company limited by shares | Dissolved |
| CASA QUADRA LIMITED | Private company limited by shares | Live |
| QUADRA DESIGN COMMUNICATION LIMITED | Private company limited by shares | Live |
| QUADRA DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| QUADRA ENGINEERING DESIGNS LIMITED | Private company limited by shares | Live |
| QUADRA (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| QUADRA TECHNIC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QUADRA INVESTMENT LIMITED | Private company limited by shares | Live |
| QUADRA STRAT TRADE SERVICES LIMITED | Private company limited by shares | Live |
| QUADRA TECHNIC I C S LIMITED | Private company limited by shares | Live |
| QuadraByte Technology Limited | Private company limited by shares | Dissolved |
| QUADRACAST LIMITED | Private company limited by shares | Dissolved |
| QUADRAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| QUADRALINK COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRAN LIMITED | Private company limited by shares | Live |
| QUADRANET LIMITED | Private company limited by shares | Live |
| QUADRANGLE LIMITED | Private company limited by shares | Dissolved |
| Quadrangle Limited | Private company limited by shares | Live |
| Quadrangle HK Limited | Private company limited by shares | Live |
| Quadrangle Asia Limited | Private company limited by shares | Live |
| Quadrangle Corporation Limited | Private company limited by shares | Live |
| QUADRANGLE GROUP ASIA LIMITED | Private company limited by shares | Dissolved |
| QUADRANT LIMITED | Private company limited by shares | Dissolved |
| QUADRANT LIMITED | Private company limited by shares | Dissolved |
| New Quadrant Limited | Private company limited by shares | Dissolved |
| New Quadrant Limited | Private company limited by shares | Live |
| QUADRANT AG LIMITED | Private company limited by shares | Live |
| Quadrant Company Limited | Private company limited by shares | Live |
| QUADRANT ASIA LIMITED | Private company limited by shares | Dissolved |
| HANGZHOU QUADRANT TECHNOLOGY CO., LIMITED | | Live |
| QUADRANT COMPONENTS INC LIMITED | Private company limited by shares | Live |
| QUADRANT LINK CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| Quadrant Consulting Limited | Private company limited by shares | Dissolved |
| Quadrant Dental Lab Limited | Private company limited by shares | Live |
| DIFFERENT QUADRANT LIMITED | Private company limited by shares | Live |
| QUADRANT ELECTRIC LIMITED | Private company limited by shares | Dissolved |
| QUADRANT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| QUADRANT ENGINEERING (H.K.) LIMITED | Private company limited by shares | Live |
| LM First Quadrant Holding Limited | | Live |
| Quadrant Link Holdings Limited | Private company limited by shares | Dissolved |
| HONGKONG QUADRANT DESIGN CONSULTING LIMITED | | Live |
| QUADRANT IMAGE ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRANT INTERNATIONAL DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| QUADRANT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Quadrant Investment Management Co., Limited | | Live |
| QUADRANT EPP ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| QUADRANT GLOBAL SEARCH LIMITED | Private company limited by shares | Dissolved |
| QUADRANT SERVICES LIMITED | Private company limited by shares | Live |