| ATOZ INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ATOZ INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ATOZ INTERNATIONAL HONG KONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATOZ INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| ATOZ INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ATOZ HK INVESTMENT LIMITED | | Live |
| ATOZ DESIGN LABS CO., LIMITED | Private company limited by shares | Live |
| ATOZ MARINE LIMITED | Private company limited by shares | Live |
| ATOZ NOMINEES LIMITED | Private company limited by shares | Live |
| ATOZ PETRO-CHEMICALS LIMITED | Private company limited by shares | Dissolved |
| Atoz Pharmaceutical (HK) Limited | Private company limited by shares | Live |
| ATOZ PRIME TRADE LIMITED | Private company limited by shares | Live |
| NEW ATOZ GRAPHIC & PRINTING LIMITED | Private company limited by shares | Dissolved |
| ATOZ GRAPHICS & PRINTING LIMITED | Private company limited by shares | Live |
| ATOZ PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| ATOZ PUBLICATIONS LIMITED | Private company limited by shares | Dissolved |
| Atoz Healthcare Service Limited | Private company limited by shares | Live |
| ATOZ SPACE LIMITED | Private company limited by shares | Dissolved |
| AtoZ Supply Limited | Private company limited by shares | Live |
| ATOZ TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ATOZ Translation Co., Limited | Private company limited by shares | Live |
| ATOZGROUP LIMITED | Private company limited by shares | Dissolved |
| ATOZMATION LIMITED | Private company limited by shares | Dissolved |
| ATOZMATION PRO LIMITED | Private company limited by shares | Dissolved |
| ATOZMATION CONSULTATION LIMITED | Private company limited by shares | Dissolved |
| ATOZRT TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ATOZTEC ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| ATOZTEC (CHINA) LIMITED | Private company limited by shares | Dissolved |
| ATOZTEC COMPUTERS LIMITED | Private company limited by shares | Live |
| ATOZTEC MARITIME LIMITED | Private company limited by shares | Dissolved |
| ATOZTEC RESOURCES LIMITED | Private company limited by shares | Live Commenced dormancy on 29-Mar-1996 |
| ATOZTEC SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| ATOZTEC TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| ATOZTRONIC LIMITED | Private company limited by shares | Dissolved |
| ATOZZ (H. K.) CO., LIMITED | Private company limited by shares | Live |
| AtPac Company Limited | Private company limited by shares | Dissolved |
| ATPC Limited | Private company limited by shares | Live |
| ATPC Global Limited | Private company limited by shares | Live |
| ATPHIZYOM LIMITED | Private company limited by shares | Live |
| ATPHR LIMITED | Private company limited by shares | Live |
| ATPI LIMITED | Private company limited by shares | Live |
| ATPI Travel (Hong Kong) Limited | Private company limited by shares | Live |
| ATPK (HONGKONG) AIR COMPRESSOR EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| atPM Limited | Private company limited by shares | Dissolved |
| ATPORT LIMITED | Private company limited by shares | Dissolved |
| ATPR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Atpregnancy Limited | Private company limited by shares | Live |
| ATPS Limited | Private company limited by shares | Dissolved |
| i atque L Company Limited | Private company limited by shares | Live |
| HK ATQUEEN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| atQuest Solution Limited | Private company limited by shares | Live |
| ATRA LIMITED | Private company limited by shares | Live |
| ATRA Corporation Limited | Private company limited by shares | Live |
| ATRA TRADING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ATRA TRADING LIMITED | | Live |
| ATRAC LIMITED | Private company limited by shares | Dissolved |
| ATRAC TRADING LIMITED | Private company limited by shares | Dissolved |
| ATRACC LIMITED | Private company limited by shares | Dissolved |
| ATRACC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| A-TRACK HUMAN RESOURCES CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| ATRACON LIMITED | Private company limited by shares | Dissolved |
| ATRACTIS LIMITED | Private company limited by shares | Live |
| A-TRADE LIMITED | Private company limited by shares | Live |
| A-Trade Finance Limited | Private company limited by shares | Dissolved |
| ATRADE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Atrade365 Limited | | Live |
| ATrademark.com Limited | Private company limited by shares | Live |
| ATRADIUS COLLECTIONS LIMITED | Private company limited by shares | Live |
| atrain Limited | Private company limited by shares | Live |
| Atrak Company Limited | Private company limited by shares | Live |
| ATRAN LIMITED | Private company limited by shares | Dissolved |
| Atranquillo LIMITED | Private company limited by shares | Live |
| ATR-ART INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ATR-ASIA TOURISM RELATIONS LIMITED | Private company limited by shares | Live |
| ATRAWARE LIMITED | Private company limited by shares | Dissolved |
| Atree HK Limited | Private company limited by shares | Dissolved |
| ATREE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG ATREERU PERSONAL HEALTH CARE CORPORATION LIMITED | Private company limited by shares | Live |
| ATREIDES LIMITED | Private company limited by shares | Live Commenced dormancy on 19-Apr-2016 |
| ATREIDES Limited | | Live |
| ATREIU ASIA HOLDING LIMITED | Private company limited by shares | Live |
| ATREND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ATrend Fashion Limited | Private company limited by shares | Live |
| A-TREND TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATREND ENTERPRISES ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| ATREUS GROUP LIMITED | Private company limited by shares | Live |
| ATREX MANUFACTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATREX SALES LIMITED | Private company limited by shares | Live |
| ATRI LIMITED | Private company limited by shares | Live |
| ATRIA LIMITED | Private company limited by shares | Dissolved |
| Atria Pte Limited | Private company limited by shares | Dissolved |
| ATRIA LIMITED | Private company limited by shares | Live |
| ATRIA HOLDING LIMITED | | Live |
| Atria Holdings Limited | Private company limited by shares | Live |
| ATRIA International Limited | Private company limited by shares | Live |
| Atria Light Hong Kong Limited | Private company limited by shares | Live |
| ATRIA PROPERTIES COMPANY LIMITED | Private company limited by shares | Live |
| ATRIA SOFTWARE LIMITED | Private company limited by shares | Live |
| ATRICA HONG KONG LIMITED | Private company limited by shares | Dissolved |
| ATRICS INDUSTRY (HK) LIMITED | Private company limited by shares | Dissolved |