| QUAT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| QUATA Asia Holding Co., Limited | Private company limited by shares | Live |
| Quatanic Limited | Private company limited by shares | Live |
| QUATARIENT LIMITED | Private company limited by shares | Dissolved |
| QUATARIN LIMITED | Private company limited by shares | Dissolved |
| QUATARIS TREND TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Live |
| QUATECH CORPORATION LIMITED | Private company limited by shares | Dissolved |
| QUATEK COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUATEK COMPANY LIMITED | Private company limited by shares | Live |
| QUATERNES 1 LIMITED | Private company limited by shares | Live |
| QUATERNES 2 LIMITED | Private company limited by shares | Live |
| QUATERNES 3 LIMITED | Private company limited by shares | Live |
| QUATERNES 4 LIMITED | Private company limited by shares | Live |
| QUATERNES 5 LIMITED | Private company limited by shares | Live |
| QUATERNES FL 2 LIMITED | Private company limited by shares | Live |
| QUATERNES FL 1 LIMITED | Private company limited by shares | Live |
| QUATERNES 6 LIMITED | Private company limited by shares | Live |
| QUATERNES FL 3 LIMITED | | Live |
| QUATERNES 7 LIMITED | | Live |
| QUATERNION CAPITAL LIMITED | Private company limited by shares | Live |
| QUATERNION HONG KONG LIMITED | Private company limited by shares | Live |
| QUATERNION CAPITAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| QUATERNITY LIMITED | Private company limited by shares | Live |
| Quaternity Advisory Services Limited | Private company limited by shares | Live |
| QUATEROWE LIMITED | Private company limited by shares | Dissolved |
| QUATEX TEXTILES COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUATIUS LIMITED | Private company limited by shares | Live |
| QUATIUS MPP LIMITED | Private company limited by shares | Live |
| QUATIUS INTERNATIONAL (BM) LIMITED | Private company limited by shares | Live |
| QUATIUS INNOVATION LIMITED | Private company limited by shares | Live |
| QUATIUS MEAT AND LIVESTOCK LIMITED | Private company limited by shares | Live |
| QUATIUS MEDIA LIMITED | Private company limited by shares | Live |
| QUATONE CHEMIE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| QUATONE GAS TECHNOLOGY (CHINA) CO., LIMITED | Private company limited by shares | Live |
| QUATRA LIMITED | Private company limited by shares | Live |
| Quatra Global Limited | Private company limited by shares | Live |
| QUATRA INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| QUATRA INDUSTRIAL LIMITED | Private company limited by shares | Live |
| QUATRA SERVICES LIMITED | Private company limited by shares | Dissolved |
| QUATRACE LIMITED | Private company limited by shares | Dissolved |
| Quatre C Limited | Private company limited by shares | Live |
| QUATRE LIMITED | | Live |
| AUX QUATRE COULEURS LIMITED | Private company limited by shares | Live |
| TRENDE QUATRE LIMITED | Private company limited by shares | Live |
| Quatre'R Limited | Private company limited by shares | Dissolved |
| Quatre-Vingt-Un Limited | Private company limited by shares | Live |
| QUATRINA JEWELLERY LIMITED | Private company limited by shares | Live |
| QUATRIX-XX GROUP LIMITED | Private company limited by shares | Live |
| QUATRO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| QUATRO ENTERPRISES LIMITED | Private company limited by shares | Live |
| QUATROGENIC LIMITED | Private company limited by shares | Dissolved |
| QUATROL INVESTMENT (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUATRO-METRIC LIMITED | Private company limited by shares | Live |
| Quatron Electric Co., Limited | Private company limited by shares | Live |
| QUATROSTONE LIMITED | Private company limited by shares | Live |
| QUATSINO LIMITED | Private company limited by shares | Dissolved |
| QUATTRINI LIMITED | Private company limited by shares | Dissolved |
| Quattro Limited | Private company limited by shares | Live |
| QUATTRO HK LIMITED | Private company limited by shares | Live |
| QUATTRO LIMITED | Private company limited by shares | Live |
| QUATTRO ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Quattro Alchemy Limited | Private company limited by shares | Live |
| QUATTRO AMICI (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Quattro Capital Limited | Private company limited by shares | Live |
| Quattro Partners Co., Limited | Private company limited by shares | Live |
| Quattro Dynamics Company Limited | Private company limited by shares | Live |
| Quattro Eleganti Trading Limited | Private company limited by shares | Live |
| QUATTRO ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Quattro Enterprise Limited | Private company limited by shares | Live |
| QUATTRO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| QUATTRO FRENI LIMITED | Private company limited by shares | Live |
| QUATTRO GROUP LIMITED | Private company limited by shares | Live |
| QUATTRO DIVANI GROUP LIMITED | Private company limited by shares | Live |
| QUATTRO ANGOLI HONG KONG LIMITED | Private company limited by shares | Live |
| Quattro International Limited | Private company limited by shares | Live |
| QUATTRO INVESTMENTS LIMITED | Private company limited by shares | Live |
| Quattro Capital Asia Partners Limited | Private company limited by shares | Live |
| QUATTRO PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| QUATTRO STAGIONI CLINICA DI BELLEZZA LIMITED | Private company limited by shares | Dissolved |
| QUATTRO STUDIOS LIMITED | Private company limited by shares | Dissolved |
| QUATTRO SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| QUATTRO TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| QUATTRO TORI LIMITED | Private company limited by shares | Dissolved |
| SC QUATTRO TRADING LIMITED | Private company limited by shares | Live |
| QUATTRO TRAVEL LIMITED | Private company limited by shares | Dissolved |
| QUATTROS (P & A) ARCHITECTS LIMITED | Private company limited by shares | Live |
| QUATTROS BYAD CONSULTANCY LIMITED | Private company limited by shares | Live |
| QUATTUOR CAPITAL LIMITED | Private company limited by shares | Live |