| QUARTECT DESIGN LIMITED | Private company limited by shares | Dissolved |
| QUARTECT DESIGN LIMITED | Private company limited by shares | Live |
| NEW QUARTER LIMITED | Private company limited by shares | Dissolved |
| JET QUARTER LIMITED | Private company limited by shares | Dissolved |
| QUARTER COMPANY LIMITED | Private company limited by shares | Live |
| Quarter Limited | | Live |
| BEST QUARTER LIMITED | Private company limited by shares | Dissolved |
| Northern Quarter Co., Limited | | Live |
| EMPTY QUARTER COMPANY LIMITED -THE- | Private company limited by shares | Live |
| FIRST QUARTER LIMITED | | Live |
| FRENCH QUARTER COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| FULL QUARTER TRADING LIMITED | Private company limited by shares | Live |
| QUARTER INVESTMENTS LIMITED | Private company limited by shares | Live |
| LATIN QUARTER LIMITED | Private company limited by shares | Dissolved |
| LATIN QUARTER LIMITED | Private company limited by shares | Dissolved |
| LEGATION QUARTER LIMITED -THE- | Private company limited by shares | Live |
| MODERN QUARTER LIMITED | Private company limited by shares | Dissolved |
| A QUARTER TO NINE LIMITED | Private company limited by shares | Live |
| QUARTER WAY PRODUCTIONS LIMITED | Private company limited by shares | Live |
| RICH QUARTER LIMITED | Private company limited by shares | Live |
| Quarter Square Limited | Private company limited by shares | Live |
| QUARTER STUDIO LIMITED | Private company limited by shares | Live |
| Quarter Cut Studio Company Limited | | Live |
| A Quarter Technology Limited | | Live |
| UNIQUE QUARTER LIMITED | Private company limited by shares | Live |
| WELL QUARTER LIMITED | Private company limited by shares | Dissolved |
| QUARTERDECK LIMITED | Private company limited by shares | Dissolved |
| Quarterhead Strategy Limited | Private company limited by shares | Live |
| Quarterline International Limited | | Live |
| QUARTERMAIN LIMITED | Private company limited by shares | Dissolved |
| QUARTERMAIN LIMITED | Private company limited by shares | Live |
| Quartermain Alpha Limited | Private company limited by shares | Live |
| Quartermain Corporate Services Limited | Private company limited by shares | Live |
| Quartermaine, Asquith and Associates Limited | Private company limited by shares | Live |
| QUARTERMASTER LIMITED | Private company limited by shares | Dissolved |
| Quartermile (HK) Trading Co., Limited | | Live |
| TWO QUARTERS LIMITED | Private company limited by shares | Live |
| TOP QUARTERS LIMITED | Private company limited by shares | Dissolved |
| QUARTET FS HK LIMITED | Private company limited by shares | Live |
| Quartet BSG Company Limited | Private company limited by shares | Live |
| Quartet Limited | | Live |
| Quartet HK Limited | | Live |
| QUARTET LUCK LIMITED | Private company limited by shares | Dissolved |
| Quartetech Limited | Private company limited by shares | Live |
| QUARTETTE INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUARTEX LIMITED | Private company limited by shares | Dissolved |
| QUARTEXX HOLDING LIMITED | Private company limited by shares | Dissolved |
| QUARTEY PROPERTIES LIMITED | Private company limited by shares | Live |