| 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 |
| ATTEROL LIMITED | Private company limited by shares | Dissolved |
| ATTESA INVESTMENTS LIMITED | Private company limited by shares | Live |
| ASIA BRAND ATTESTATION MANAGEMENT LIMITED | Private company limited by shares | Live |
| HK MISSION HILLS CULTURAL ART ATTESTATION & ASSESSMENT LIMITED | Private company limited by shares | Live |
| GENERAL ATTESTATION SERVICE LIMITED | Private company limited by shares | Live |
| ZHONGYING USA STANDARD ATTESTATION LIMITED | Private company limited by shares | Dissolved |
| ASSOCIATION OF CHINA-APPOINTED ATTESTING OFFICERS LIMITED | Company limited by guarantee | Live |
| ATTEZ LIMITED | Private company limited by shares | Live |