| Authentica Limited | | Live |
| HK INTERNATIONAL INDUSTRY BRAND AUTHENTICATE REGISTER CO., LIMITED | Private company limited by shares | Live |
| AUTHENTICATED LIMITED | Private company limited by shares | Live |
| ROYAL HERITAGE ANCIENT ART AUTHENTICATION CENTRE LIMITED | Private company limited by shares | Dissolved |
| CHINESE ANTIQUES AUTHENTICATION LIMITED | Private company limited by shares | Dissolved |
| ROYAL HERITAGE CERAMICS AUTHENTICATION LIMITED | Private company limited by shares | Live |
| CHINA AUTHENTICATION SECRETARY FEDERATION LIMITED | Private company limited by shares | Live |
| CHINESE DRAGON EDUCATION AUTHENTICATION CO., LIMITED | Private company limited by shares | Live |
| Global Anti-Counterfeiting Authentication Company Limited | Private company limited by shares | Live |
| GRADING OWL AUTHENTICATION LIMITED | | Live |
| HONG KONG RAISED PIG AUTHENTICATION LIMITED | Private company limited by shares | Live |
| CHINA ENTERPRISE MANAGEMENT THE AUTHENTICATION ASSOCIATION LIMITED | Private company limited by shares | Live |
| RFID Authentication (Hong Kong) Company Limited | Private company limited by shares | Live |
| U.K. SIGMA AUTHENTICATION LIMITED | Private company limited by shares | Dissolved |
| WINE AUTHENTICATION LIMITED | Private company limited by shares | Live |
| Authenticator Technology Limited | | Live |
| AUTHENTICITY LIMITED | Private company limited by shares | Live |
| Authentico Global Co., LIMITED | Private company limited by shares | Live |
| Authentiques Limited | Private company limited by shares | Live |
| Authento Limited | | Live |
| AUTHLUXE LIMITED | | Live |
| AUTHOGRAFIC LIMITED | | Live |
| AUTHORILE LIMITED | Private company limited by shares | Dissolved |
| STANDARD AUTHORISED ACCOUNTANTS LIMITED | Private company limited by shares | Dissolved |
| STANDARD AUTHORISED ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| STANDARD AUTHORISED (SOUTH AFRICA) CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| STANDARD AUTHORISED INSURANCE CONSULTANT LIMITED | Private company limited by shares | Live |
| EXCLUSIVE AUTHORISED PRODUCTS (HK), LIMITED | Private company limited by shares | Dissolved |
| CONTRACTOR'S AUTHORISED SIGNATORY ASSOCIATION LIMITED | Company limited by guarantee | Live |
| AUSPAT AUTHORISED LAND SURVEYORS LIMITED | Private company limited by shares | Live |
| STANDARD AUTHORISED TRAVEL LIMITED | Private company limited by shares | Dissolved |
| HK AUTHORITATIVE ADVERTISING LIMITED | Private company limited by shares | Live |
| Authoritative Agricultural Technology Limited | Private company limited by shares | Live |
| GREAT AUTHORITATIVE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Authoritative Spiritual Education Limited | Private company limited by shares | Live |
| AUTHORITATIVE RACING NEWS LIMITED | Private company limited by shares | Dissolved |
| AUTHORITATIVE TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| CHINA AUTHORITATIVENESS PAINTING AND CALLIGRAPHY ART ASSOCIATION LIMITED | Private company limited by shares | Live |
| AUTHORITIES BIRD SHOP SEAFOOD COMPANY LIMITED | Private company limited by shares | Dissolved |
| AUTHORITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| AUTHORITY LIMITED | Private company limited by shares | Live |
| CMC CERTIFICATION AUTHORITY LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL TRADEMARK AUTHORIZE INSTITUTION LIMITED | Private company limited by shares | Live |
| INT'L TRADEMARK AUTHORIZE MANAGE LEAGUE LIMITED | Private company limited by shares | Dissolved |
| AUTHORWARE (HK) LIMITED | Private company limited by shares | Dissolved |
| AUTHOSIS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| AUTHOSIS SEMICONDUCTOR (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| AUTHPAPER LIMITED | Private company limited by shares | Live |
| USA INTERNATIONAL STANDARD AUTHRITY CENTRE CO., LIMITED | Private company limited by shares | Live |
| AUTHTEC GATEWAY LIMITED | Private company limited by shares | Dissolved |
| AUTIER TRADING LIMITED | Private company limited by shares | Live |
| AUTILI (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Autily International Co., Limited | Private company limited by shares | Live |
| AUTIME LIMITED | Private company limited by shares | Dissolved |
| Germany Autisen Pipeline Technology Co., Limited | | Live |
| autismilee LIMITED | Private company limited by shares | Live |
| Autismillee Foundation Limited | | Live |
| WORLD NATURE MEDICAL ASSOCIATION NANJING TIANYOU CHILDREN CEREBRAL PALSY AUTISMRESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| AUTKING LIMITED | Private company limited by shares | Live |
| Global Autleys (China) Holding Limited | Private company limited by shares | Live |
| Autlus Commercial Company Limited | Private company limited by shares | Live |
| AUTO AGE LIMITED | Private company limited by shares | Dissolved |
| AUTO FAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| J. AUTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| AUTO SKY LIMITED | Private company limited by shares | Dissolved |
| YAN JUN AUTO CO. LIMITED | Private company limited by shares | Live |
| K & L AUTO LIMITED | Private company limited by shares | Dissolved |
| E. J. AUTO COMPANY LIMITED | Private company limited by shares | Live |
| KAM FAI AUTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAT FAI AUTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| 4WD AUTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| J. AUTO HK LIMITED | Private company limited by shares | Live |
| AUTO ONE LIMITED | Private company limited by shares | Live |
| BEL AUTO LIMITED | Private company limited by shares | Dissolved |
| WHH AUTO LIMITED | Private company limited by shares | Dissolved |
| WEI KAH AUTO LIMITED | Private company limited by shares | Dissolved |
| M2U AUTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| AUTO LIMITED | Private company limited by shares | Live |
| JAS AUTO LIMITED | Private company limited by shares | Live |
| S & P Auto Limited | Private company limited by shares | Live |
| AUTO - ID LIMITED | Private company limited by shares | Dissolved |
| SAN KEE AUTO COMPANY LIMITED | Private company limited by shares | Live |
| AUTO WAY LIMITED | Private company limited by shares | Dissolved |
| AUTO RAY LIMITED | Private company limited by shares | Live |
| GP AUTO Z LIMITED | Private company limited by shares | Live |
| CRJ AUTO LIMITED | Private company limited by shares | Live |
| AUTO ECU LIMITED | Private company limited by shares | Dissolved |
| Y. F. AUTO LIMITED | Private company limited by shares | Dissolved |
| JCP Auto Limited | Private company limited by shares | Live |
| ATY Auto Limited | Private company limited by shares | Live |
| A P AUTO COMPANY LIMITED | Private company limited by shares | Live |
| TG AUTO LIMITED | Private company limited by shares | Dissolved |
| AUTO RUN LIMITED | Private company limited by shares | Live |
| SGC Auto Limited | Private company limited by shares | Live |
| HKP Auto Limited | Private company limited by shares | Dissolved |
| PIT AUTO LIMITED -THE- | Private company limited by shares | Live |
| SGL Auto Limited | Private company limited by shares | Live |
| ATB AUTO ART LIMITED | Private company limited by shares | Live |
| G.W AUTO LIMITED | Private company limited by shares | Live |
| AUTO CHE COMPANY LIMITED | Private company limited by shares | Live |