| ACTUAL WEALTH LIMITED | Private company limited by shares | Live |
| Actualcolor Instruments HK Limited | Private company limited by shares | Live |
| ACTUALIZE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Actualize Limited | Private company limited by shares | Live |
| ACTUALIZE ASIA LIMITED | Private company limited by shares | Live |
| ACTUALIZE EDUCATION LIMITED | | Live |
| Group Actualize Hong Kong Limited | Private company limited by shares | Live |
| Actualize Hong Kong Limited | Private company limited by shares | Live |
| Actually Limited | Private company limited by shares | Live |
| ART ACTUALLY LIMITED | Private company limited by shares | Live |
| ACTUALO LIMITED | Company limited by guarantee | Dissolved |
| ACTUAPLAST CHINA LIMITED | Private company limited by shares | Live |
| ACTUAPLAST RAPID PROTOTYPING LIMITED | Private company limited by shares | Live |
| PFH ACTUARIES LIMITED | | Live |
| NMG RISK MANAGERS & ACTUARIES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| PRIVATE ACTUARY LIMITED | Private company limited by shares | Live |
| ACTUARYAPP LIMITED | Private company limited by shares | Live |
| Actuasia Limited | Private company limited by shares | Live |
| ACTUATE LIMITED | Private company limited by shares | Live |
| IDENTIFY & ACTUATE TECH (HK) LIMITED | Private company limited by shares | Live |
| Actuator Limited | Private company limited by shares | Live |
| MEMS Actuator Hong Kong Limited | | Live |
| GERMANY SIPOS ELECTRIC ACTUATOR LIMITED | Private company limited by shares | Live |
| ACTUATOR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA ACTUATOR TECHNOLOGY GROUP SHARES LIMITED | Private company limited by shares | Live |
| HK TOMUU ACTUATOR TECHNOLOGY CO., LIMITED | | Live |
| X-ING Linear Actuator Co., Limited | Private company limited by shares | Live |
| ACTUATORS LIMITED | Private company limited by shares | Dissolved |
| BELIMO ACTUATORS LIMITED | Private company limited by shares | Live |
| ACTUED LIMITED | Private company limited by shares | Live |
| ACTUEL PUBLIC AFFAIRS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| ACTUM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ACTURN CARPET LIMITED | Private company limited by shares | Dissolved |
| ACTURN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ACTUS LIMITED | Private company limited by shares | Live |
| HK ACTUS LIMITED | Private company limited by shares | Live |
| ACTUS ASIA LIMITED | Private company limited by shares | Live |
| ActusRayPartners Limited | Private company limited by shares | Live |
| ACTUTECH HONGKONG CO., LIMITED | Private company limited by shares | Live |
| Actutex Limited | Private company limited by shares | Live |
| ACTUVA LIMITED | Private company limited by shares | Dissolved |
| Actvertising Limited | Private company limited by shares | Live |
| ACTVIEW LIMITED | Private company limited by shares | Dissolved |
| ACTVISION LIMITED | Private company limited by shares | Dissolved |
| ACTWAY COMPANY LIMITED | Private company limited by shares | Live |
| ACTWEALTH LIMITED | Private company limited by shares | Dissolved |
| ACTWEALTH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ACTWELL LIMITED | Private company limited by shares | Live |
| ACTWELL INC LIMITED | Private company limited by shares | Live |
| ACTWELL INVESTMENT LIMITED | Private company limited by shares | Live |
| ACTWELL TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ACTWIN LIMITED | Private company limited by shares | Dissolved |
| ACTWIN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ACTWIN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ACTWIN KNITTING FACTORY LIMITED | Private company limited by shares | Dissolved |
| ACTWIN SHIPPING LIMITED | Private company limited by shares | Dissolved |
| ACTWIND TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| ACTWISE LIMITED | Private company limited by shares | Live |
| Actwiser Limited | | Live |
| ACTWOOD LIMITED | Private company limited by shares | Live |
| ACTY Capital Limited | Private company limited by shares | Live |
| ACTY CONSULTATION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| ACTY GROUP (HK) CO., LIMITED | Private company limited by shares | Live |
| ACTY ENTERPRISES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ACTY HONGKONG LIMITED | Private company limited by shares | Dissolved |
| Acty Investments Limited | Private company limited by shares | Dissolved |
| ACTY (M.D.P.) LIMITED | Private company limited by shares | Dissolved |
| Actyon Tyre Resources Co., Limited | Private company limited by shares | Live |
| ACTYON TYRE RESOURCES CO., LIMITED | | Live |
| ACTYON INDUSTRIAL DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Actysun (Hong Kong) Company Limited | Private company limited by shares | Dissolved |
| Actyve Limited | | Live |
| ACTYWELL DIGITAL LIMITED | Private company limited by shares | Live |
| ACTYX LIMITED | Private company limited by shares | Dissolved |
| Acuadot Cosmetics Limited | Private company limited by shares | Live |
| ACUALN TRADING LIMITED | Private company limited by shares | Live |
| Acuarela House Limited | Private company limited by shares | Live |
| Acuate_Format Company Limited | Private company limited by shares | Live |
| Acube Limited | Private company limited by shares | Live |
| ACUBEN LIMITED | Private company limited by shares | Dissolved |
| ACubic Company Limited | Private company limited by shares | Dissolved |
| AcuCare Limited | Private company limited by shares | Live |
| AcuConsult Limited | Private company limited by shares | Live |
| ACUERATE LIMITED | Private company limited by shares | Dissolved |
| ACUFILL LIMITED | Private company limited by shares | Live |
| ACUHEALTH LIMITED | Private company limited by shares | Dissolved |
| Acuiderm (Hongkong) Investment Group Co., Limited | Private company limited by shares | Live |
| Acuiderm International Limited | | Live |
| Acuie & Co. Limited | Private company limited by shares | Live |
| Acuie & Co. Limited | Private company limited by shares | Live |
| ACUITY LIMITED | Private company limited by shares | Dissolved |
| ACUITY LIMITED | Private company limited by shares | Live |
| ACUITY ASIA LIMITED | Private company limited by shares | Live |
| Acuity Enterprise Limited | Private company limited by shares | Live |
| Acuity Holding Limited | Private company limited by shares | Live |
| AcuitySense Limited | Private company limited by shares | Dissolved |
| Aculon LLP LIMITED | | Live |
| Acuma Hong Kong Limited | Private company limited by shares | Live |
| ACUMATICA PTE LIMITED | Private company limited by shares | Dissolved |
| ACUMEC LIMITED | Private company limited by shares | Live |