| Attach Company Limited | Private company limited by shares | Live |
| ATTACH FASHION LIMITED | Private company limited by shares | Live |
| Attach Technology Co., Limited | Private company limited by shares | Live |
| ATTACHE LIMITED | Private company limited by shares | Dissolved |
| ATTACHEM LIMITED | Private company limited by shares | Live |
| ATTACHMATE GROUP HONG KONG LIMITED | Private company limited by shares | Live |
| ATTACHMATE (HONG KONG) LIMITED | Private company limited by shares | Live Commenced dormancy on 21-Mar-2016 |
| Attachment Concepts Limited | Private company limited by shares | Live |
| ATTACHMUM LIMITED | Private company limited by shares | Live |
| AD ATTACK LIMITED | Private company limited by shares | Dissolved |
| MAK ATTACK LIMITED | Private company limited by shares | Live |
| Attack Camp General Trading Limited | Private company limited by shares | Live |
| A-T-T-A-C-K ATHLETICS (GREATER CHINA) LIMITED | Private company limited by shares | Live |
| Piercing Attack Jewelry Co., Limited | Private company limited by shares | Live |
| ATTACK ELECTRICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| ART ATTACK (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TOP ATTACK (HONG KONG) LIMITED | Private company limited by shares | Live |
| Attack Poverty Asia Limited | Private company limited by shares | Live |
| MAK ATTACK PRODUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Smart Attack Limited | Private company limited by shares | Live |
| ATTACK SOCCER LIMITED | Private company limited by shares | Live |
| TIME ATTACK LIMITED | Private company limited by shares | Live |
| Toys Attack Company Limited | Private company limited by shares | Dissolved |
| ATTACKER EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| Attacking Sports Company Limited | Private company limited by shares | Live |
| ATTAIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| Attain Limited | Private company limited by shares | Live |
| Erect Attain Trade Limited | Private company limited by shares | Live |
| GRAND ATTAIN LIMITED | Private company limited by shares | Live |
| ATTAIN SUCCESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTAINED GOAL LIMITED | Private company limited by shares | Live |
| ATTAINER COMPANY LIMITED | Private company limited by shares | Dissolved |
| EDUCATIONAL ATTAINMENT LIMITED | Private company limited by shares | Dissolved |
| GLOBAL ENERGY ATTAINMENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Attainment International Limited | Private company limited by shares | Live |
| JOYFUL ATTAINMENT LIMITED | Private company limited by shares | Live |
| DONGGUAN EASY ATTAINMENT SHOES COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTALEN ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| ATTALLA LIMITED | Private company limited by shares | Dissolved |
| ATTAMEN LIMITED | Private company limited by shares | Dissolved |
| ATTAR HOME LIMITED | Private company limited by shares | Live |
| ATTAR HONG KONG LIMITED | Private company limited by shares | Dissolved |
| ATTAR INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTAR TRADING CO., LIMITED | Private company limited by shares | Live |
| AL ATTAR TRADING CO., LIMITED | | Live |
| ATTASTATE LIMITED | Private company limited by shares | Dissolved |
| ATTA-TRANS LIMITED | Private company limited by shares | Live |
| ATTAY LIMITED | Private company limited by shares | Dissolved |
| ATTB INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTC.com Limited | Private company limited by shares | Live |
| ATTECH Limited | Private company limited by shares | Live |
| ATTEMIER TRADING LIMITED | Private company limited by shares | Dissolved |
| NEW ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| TOP ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| NEW ATTEMPT LIMITED | Private company limited by shares | Live |
| Attempt HK Limited | | Live |
| BEST ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| BEST ATTEMPT LIMITED | Private company limited by shares | Live |
| CENTRAL ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| ELITE ATTEMPT LIMITED | Private company limited by shares | Live |
| ATTEMPT FIT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| FAIR ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| FAST ATTEMPT LIMITED | Private company limited by shares | Live |
| FINE ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| FREE ATTEMPT LIMITED | Private company limited by shares | Live |
| GENERAL ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| GRAND ATTEMPT LIMITED | Private company limited by shares | Live |
| HAPPY ATTEMPT LIMITED | Private company limited by shares | Live |
| HIGHER ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| HONEST ATTEMPT LIMITED | Private company limited by shares | Live |
| LINK ATTEMPT LIMITED | Private company limited by shares | Live |
| MORE ATTEMPT LIMITED | Private company limited by shares | Live |
| SMOOTH ATTEMPT LIMITED | Private company limited by shares | Live |
| SPEED ATTEMPT LIMITED | Private company limited by shares | Dissolved |
| SUNNY ATTEMPT LIMITED | Private company limited by shares | Live |
| SUNRISE ATTEMPT LIMITED | Private company limited by shares | Live |
| SURPRISING ATTEMPT LIMITED | Private company limited by shares | Live |
| ATTEN (HONGKONG) ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN ATTEN ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| ATTEN GLOBAL LIMITED | Private company limited by shares | Live |
| ATTENBERG COMPANY LIMITED | Private company limited by shares | Live |
| ATTENBOROUGH LIMITED | Private company limited by shares | Dissolved |
| ATTENDANCE LIMITED | Private company limited by shares | Live |
| SERVICE & ATTENDANCE LIMITED | Private company limited by shares | Live |
| CATHAY PACIFIC AIRWAYS CABIN ATTENDANTS ASSOCIATION LIMITED -THE- | Company limited by guarantee | Dissolved |
| Attende Limited | Private company limited by shares | Live |
| WELL ATTENDED LIMITED | Private company limited by shares | Dissolved |
| ATTENTION LIMITED | Private company limited by shares | Dissolved |
| Attention Company Limited -The- | Private company limited by shares | Live |
| ATTENTION CREATIVE LIMITED | Private company limited by shares | Live |
| Attention Group Limited | Private company limited by shares | Dissolved |
| ATTENTION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ATTENTION TRADING LIMITED | Private company limited by shares | Live |
| HK AttentionM Interactive Marketing Limited | Private company limited by shares | Live |
| AttentionX Limited | | Live |
| ATTENTIVE AHEAD LIMITED | Private company limited by shares | Live |
| ATTENTIVE LUCK LIMITED | Private company limited by shares | Live |
| ATTENTZIONE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTENWOOD COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATTERBURY LIMITED | Private company limited by shares | Dissolved |