| ATINARS LIMITED | Private company limited by shares | Dissolved |
| ATING LIMITED | | Live |
| ATINS CO., LIMITED | Private company limited by shares | Live |
| at.Intervals Fine Arts Studio Limited | Private company limited by shares | Live |
| ATINWICK LIMITED | Private company limited by shares | Dissolved |
| ATINY LIMITED | Private company limited by shares | Live |
| ATIP International Limited | Private company limited by shares | Live |
| ATIR TRADING COMPANY LIMITED | Private company limited by shares | Live |
| A-Tirgus Limited | | Live |
| ATIS LIMITED | Private company limited by shares | Live |
| Atis HK Limited | Private company limited by shares | Dissolved |
| ATIS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HongKong Atisen International Co., Limited | Private company limited by shares | Dissolved |
| Hongkong Atisen Development Limited | Private company limited by shares | Live |
| ATISHA BUDDHIST SOCIETY LIMITED | Company limited by guarantee | Dissolved |
| HONG KONG ATISHA BUDDHIST SOCIETY LIMITED | Company limited by guarantee | Live |
| ATISO LIMITED | Private company limited by shares | Live |
| ATITI ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Atitlan trade Limited | Private company limited by shares | Live |
| ATITU INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ATIUM LIMITED | Private company limited by shares | Dissolved |
| Atium Bit Limited | | Live |
| ATIVA SNL LIMITED | Private company limited by shares | Live |
| ATIVA BRASIL LIMITED | Private company limited by shares | Live |
| ATKENDOLF LIMITED | Private company limited by shares | Dissolved |
| ATKF COMPANY LIMITED | Private company limited by shares | Live |
| ATKIN PROPERTIES LIMITED | Private company limited by shares | Live |
| ATKINS LIMITED | Private company limited by shares | Dissolved |
| ATKINS ACCOUNTING SERVICES LIMITED | Private company limited by shares | Live |
| ATKINS CHINA LIMITED | Private company limited by shares | Live |
| ATKINS LANDSCAPE PLANNING AND DESIGN CO., LIMITED | Private company limited by shares | Live |
| ATKINS SECRETARIES & CONSULTANTS LIMITED | Private company limited by shares | Live |
| Atkins Group Limited | Private company limited by shares | Live |
| ATKINS & ASSOCIATES INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ATKINS INVESTMENT COMPANY, LIMITED | Private company limited by shares | Dissolved |
| ATKINS PERSONNEL CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| J.B. ATKINS AND SONS LIMITED | Private company limited by shares | Dissolved |
| ATKINSON LIMITED | Private company limited by shares | Live |
| ATKINSON WALSH CONSULTING LIMITED | Private company limited by shares | Live |
| ATKINSON AND DALLAS, LIMITED | Company limited by guarantee | Dissolved |
| ATKINSON FOREMAN (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ATKINSON REGISTRATION LIMITED | Private company limited by shares | Dissolved |
| ATKINSON REGISTRATIONS LIMITED | Private company limited by shares | Dissolved |
| ATKINSON PROFESSIONAL REGISTRATIONS LIMITED | Private company limited by shares | Live |
| ATKINSON SECRETARIES LIMITED | Private company limited by shares | Dissolved |
| Atkinson & Sons Limited | Private company limited by shares | Live Commenced dormancy on 12-Oct-2018 |
| ATKINSON STUART LIMITED | Private company limited by shares | Dissolved |
| ATKINSON TRADING INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Atkiva Limited | Private company limited by shares | Dissolved |
| ATKO LIMITED | Private company limited by shares | Live |
| ATKONG LIMITED | Private company limited by shares | Dissolved |
| At-KS Limited | Private company limited by shares | Dissolved |
| ATLAB HEALTHCARE LIMITED | Private company limited by shares | Live |
| Atlab Pharma Limited | | Live |
| ATLANCO (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ATLAND COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATLANDA LIMITED | Private company limited by shares | Dissolved |
| ATLANDER TIRE CO., LIMITED | Private company limited by shares | Live |
| Atlanfic Technology Limited | Private company limited by shares | Live |
| AT-LANGUAGE EDUCATION LIMITED | Private company limited by shares | Live |
| AT-LANGUAGE EDUCATION CENTRE (MONGKOK) LIMITED | Private company limited by shares | Live |
| ATLANPAC COMPANY LIMITED | Private company limited by shares | Dissolved |
| Atlant Air Limited | Private company limited by shares | Live |
| Atlant Group Limited | Private company limited by shares | Live |
| ATLANT GENERAL GROUP LIMITED | | Live |
| ATLANT INDUSTRY LIMITED | Private company limited by shares | Live |
| ATLANT SOLUTIONS LIMITED | Private company limited by shares | Live |
| ATLANT TRADE LIMITED | | Live |
| ATLANTA COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATLANTA LIMITED | Private company limited by shares | Live |
| ATLANTA SHIPPING AGENCY (HOLDING) LIMITED | Private company limited by shares | Live |
| ATLANTA (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| ATLANTA INVESTMENT CONSULTING LIMITED | Private company limited by shares | Live |
| ATLANTA DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| ATLANTA ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATLANTA GLOBAL LIMITED | Private company limited by shares | Dissolved |
| Atlanta Global Holding Limited | | Live |
| ATLANTA GLOBAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Atlanta Global Sourcing Limited | | Live |
| ATLANTA INTERIORS LIMITED | Private company limited by shares | Live |
| ATLANTA INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ATLANTA NORTH LIMITED | Private company limited by shares | Dissolved |
| ATLANTA PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| ATLANTA SALES LIMITED | Private company limited by shares | Dissolved |
| ATLANTA SERVICE LIMITED | Private company limited by shares | Live |
| ATLANTA SPORTSWEAR LIMITED | Private company limited by shares | Dissolved |
| Atlanta Trade Limited | Private company limited by shares | Live |
| ATLANTA TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| ATLANTA TRADING LIMITED | Private company limited by shares | Live |
| ATLANTA TRAVEL LIMITED | Private company limited by shares | Dissolved |
| Atlanta Welfare and Venture Limited | Company limited by guarantee | Live |
| ATLANTE LIMITED | Private company limited by shares | Live |
| ATLANTE HK LIMITED | Private company limited by shares | Live |
| Atlantech Company Limited | Private company limited by shares | Live |
| ATLANTEK LIMITED | | Live |
| ATLANTIAN LIMITED | Private company limited by shares | Live |
| ATLANTIAN CS LIMITED | Private company limited by shares | Live |
| ATLANTIAN IM LIMITED | Private company limited by shares | Live |
| Atlantian Capital Limited | Private company limited by shares | Live |
| ATLANTIC MAX COMPANY LIMITED | Private company limited by shares | Dissolved |