| Atelierd&l Limited | Private company limited by shares | Live |
| ATELIER-INFO LIMITED | Private company limited by shares | Dissolved |
| ATELIER-PACK LIMITED | Private company limited by shares | Live |
| Ateliers Phi Limited | Private company limited by shares | Live |
| ATELLA COMPANY LIMITED | Private company limited by shares | Live |
| Atelligent Asian Consulting Limited | Private company limited by shares | Live |
| Atellite International Limited | Private company limited by shares | Live |
| ATEM LIMITED | | Live |
| Atem Asia Limited | | Live |
| ATEM CAPITAL LIMITED | | Live |
| A-TEM HONG KONG CORPORATION LIMITED | Private company limited by shares | Live |
| ATEM PAINT LIMITED | Private company limited by shares | Live |
| ATEMP MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| A&Tempo Company Limited | Private company limited by shares | Live |
| A-TEN LIMITED | Private company limited by shares | Dissolved |
| A-TEN ASSOCIATES LIMITED | Private company limited by shares | Live |
| ATEN BUSINESS COMPANY LIMITED | Private company limited by shares | Live |
| A-TEN COLLEGE LIMITED | Private company limited by shares | Dissolved |
| ATEN COMPUTERS LIMITED | Private company limited by shares | Dissolved |
| ATEN ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Aten Global Limited | Private company limited by shares | Live |
| A.T.E.N. HOLDING LIMITED | Private company limited by shares | Live |
| A-TEN PRODUCTIONS LIMITED | Private company limited by shares | Live |
| ATEN TECH LIMITED | Private company limited by shares | Live |
| ATEN TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| ATEN SOLAR SYSTEM AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ATEN TRADING LIMITED | Private company limited by shares | Live |
| HK A-TEN TRADING LIMITED | Private company limited by shares | Live |
| ATENA LIMITED | Private company limited by shares | Live |
| HONGKONG ATENO DESIGN INTERNATIONAL CONSULTANT COMPANY LIMITED | Private company limited by shares | Live |
| ATEO LIMITED | Private company limited by shares | Live |
| Atergen Limited | Private company limited by shares | Live |
| Ateria Hong Kong Company Limited | Private company limited by shares | Live |
| A'TERIOR STUDIO LIMITED | Private company limited by shares | Live |
| A-Ternus Limited | | Live |
| ATERON LIMITED | Private company limited by shares | Dissolved |
| Aterra Limited | Private company limited by shares | Live |
| ATERSA HONG KONG LIMITED | Private company limited by shares | Live |
| ATERSON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Atery Tech Limited | Private company limited by shares | Live |
| ATESA LIMITED | Private company limited by shares | Live |
| ATESON LIMITED | | Live |
| A-Test Compliance Services (HK) Co., Limited | Private company limited by shares | Live |
| A-TEST COMPLIANCE SERVICES (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| ATESTEO HK LIMITED | Private company limited by shares | Live |
| Atestman Co., Limited | | Live |
| ATET OPTRONICS CO., LIMITED | Private company limited by shares | Live |
| ATEVOX TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ATEX LIMITED | Private company limited by shares | Dissolved |
| ATEX LIMITED | Private company limited by shares | Dissolved |
| ATEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATEX LIMITED | Private company limited by shares | Live |
| A-TEX ASIA LIMITED | Private company limited by shares | Live |
| A-TEX ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| A-Tex Solution Limited | Private company limited by shares | Live |
| Atex Innovative Solutions Limited | Private company limited by shares | Live |
| ATEYAKA GROUP LIMITED | Private company limited by shares | Live |
| aTez COMPANY LIMITED | Private company limited by shares | Live |
| ANDES A.T.F. TRADING CO., LIMITED | Private company limited by shares | Live |
| A.T.F. POWER ELECTRICAL COMPANY LIMITED | Private company limited by shares | Live |
| A.T.F. INDUSTRIES COMPANY LIMITED | Private company limited by shares | Live |
| AT&F INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ATFICO (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ATFL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ATFORD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ATFOUR CONSULTANT LIMITED | Private company limited by shares | Live |
| ATFRAOER (China) Investment Holding Company Limited | Private company limited by shares | Live |
| AtFreyja Limited | Private company limited by shares | Live Commenced dormancy on 08-Apr-2015 |
| Atfu Electronics (HK) Limited | | Live |
| Atfx Limited | Private company limited by shares | Live |
| A & J ATG. TAX. & SEC. CO., LIMITED | Private company limited by shares | Live |
| AtGames Interactive Limited | | Live |
| Atget Express Co., Limited | Private company limited by shares | Live |
| ATGLOBAL LIMITED | Private company limited by shares | Dissolved |
| ATHA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ATHABASCA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Athabasca Group Limited | Private company limited by shares | Live |
| ATHAM COMPANY LIMITED | Private company limited by shares | Live |
| ATHAN LIMITED | Private company limited by shares | Live |
| ATHAN INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| ATHAN INVESTMENT LIMITED | Private company limited by shares | Live |
| ATHAN-CONSULTING LIMITED | Private company limited by shares | Live |
| Atharv Commercial Limited | Private company limited by shares | Live |
| ATHARV CORPORATION LIMITED | Private company limited by shares | Live |
| ATHELDENE COMPANY LIMITED | Private company limited by shares | Dissolved |
| AthElite Sports Limited | Private company limited by shares | Live |
| Athema Limited | Private company limited by shares | Live |
| ATHEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATHEN BEAUTY CENTER LIMITED | Private company limited by shares | Live |
| ATHENA LIMITED | Private company limited by shares | Dissolved |
| Athena Limited | Private company limited by shares | Live |
| Athena Limited | | Live |
| K2 Athena Limited | | Live |
| ATHENA 2 LIMITED | | Live |
| ATHENA 1 LIMITED | | Live |
| ATHENA 3 LIMITED | | Live |
| ATHENA 44 LIMITED | | Live |
| ATHENA 5 LIMITED | | Live |
| DRAGON ATHENA LIMITED | Private company limited by shares | Dissolved |
| AthenaBlocks Network Limited | | Live |