| MAN LEI TONG TELECOM (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TELECOM ENGINEERING TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| HONG KONG JIE HAO TELECOM TRADING COMPANY LIMITED | Private company limited by shares | Live |
| TRANS PACIFIC TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| United Telecom (Hong Kong) Trading Limited | | Live |
| VERTEX TELECOM ASIA (HONG KONG) LIMITED | Private company limited by shares | Live |
| VINUS TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| VOLLO TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| YIDA TELECOM HONG KONG LIMITED | | Live |
| YINGZHOU TELECOM (HONG KONG) LIMITED | | Live |
| HONGKONG TELECOM LIMITED | Private company limited by shares | Live |
| AT HONGKONG TELECOM CO. LIMITED | | Live |
| ANDROIDLINK (HONGKONG) TELECOM LIMITED | Private company limited by shares | Live |
| HONGKONG NEW ASIA TELECOM LIMITED | Private company limited by shares | Live |
| Blueocean Telecom (Hongkong) Limited | Private company limited by shares | Live |
| HONGKONG EMA TELECOM (BRAND) CO., LIMITED | Private company limited by shares | Live |
| HONGKONG BUSINESS TELECOM LIMITED | Private company limited by shares | Live |
| Central Hongkong Telecom International Limited | Private company limited by shares | Live |
| ACT CHINA HONGKONG TELECOM LIMITED | Private company limited by shares | Dissolved |
| CHINA & HONGKONG TELECOM LIMITED | Private company limited by shares | Dissolved |
| China and Hongkong Professional Telecom Co Limited | Private company limited by shares | Dissolved |
| CHINA TIETONG HONGKONG TELECOM COMPANY LIMITED | Private company limited by shares | Live |
| Cntel Telecom Group (HongKong) Limited | Private company limited by shares | Dissolved |
| HONGKONG VDF TELECOM CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG DFT TELECOM CO., LIMITED | Private company limited by shares | Live |
| HONGKONG JOY TELECOM CO., Limited | Private company limited by shares | Live |
| HONGKONG CLOUD TELECOM CO., LIMITED | | Live |
| HONGKONG JOYSUN TELECOM DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG DRAGON TELECOM CO., LIMITED | Private company limited by shares | Live |
| HONGKONG EPHONE TELECOM CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG FIRST TELECOM Co., LIMITED | Private company limited by shares | Live |
| HONGKONG FUCHENG TELECOM CO., LIMITED | | Live |
| GrownSun Telecom (HongKong) Co., Limited | Private company limited by shares | Live |
| HONGKONG HUAYUE TELECOM CO., LIMITED | Private company limited by shares | Live |
| HONGKONG JIEXUN TELECOM CO., LIMITED | Private company limited by shares | Live |
| HongKong Lewis Telecom Co., Limited | Private company limited by shares | Live |
| LONYO TELECOM (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| HONGKONG VCALL TELECOM CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG COLOUR TELECOM LIMITED | Private company limited by shares | Dissolved |
| HONGKONG TELECOM CREATE-LINK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| DALI TELECOM (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| HONGKONG TELECOM ELECTRONICS LIMITED | Private company limited by shares | Live |
| HONGKONG TELECOM ENGINEERING SERVICE LIMITED | Private company limited by shares | Dissolved |
| Etone Telecom (Hongkong) Holdings Limited | Private company limited by shares | Live |
| FASTER EASTERN TELECOM (HONGKONG) LIMITED | Private company limited by shares | Live |
| HongKong Ferry Telecom Limited | Private company limited by shares | Live |
| GIKO TELECOM HONGKONG LIMITED | Private company limited by shares | Live |
| GOAL TELECOM (HONGKONG) COMPANY LIMITED | Private company limited by shares | Live |
| Grandway Telecom (Hongkong) Company Limited | Private company limited by shares | Live Ceased dormancy on 16-Jul-2014 |
| Hongkong Telecom Group Limited | Private company limited by shares | Live |
| YC TELECOM GROUP (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| HAIQIN TELECOM HONGKONG LIMITED | Private company limited by shares | Live |
| HONGKONG HONGYU TELECOM TECH CO., LIMITED | Private company limited by shares | Live |
| HUANTONG TELECOM HONGKONG HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| HUIYING TELECOM (HONGKONG) TRADE CO., LIMITED | | Live |
| HONGKONG LANSING TELECOM INT'L CO., LIMITED | Private company limited by shares | Live |
| HONGKONG JOIN TELECOM HOLDING LIMITED | Private company limited by shares | Dissolved |
| HONGKONG KONGYUK TELECOM BUSINESS CO., LIMITED | Private company limited by shares | Live |
| HONGKONG MACAU TELECOM HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| HONGKONG TELECOM FUND MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| HONGKONG MKTEL TELECOM LIMITED | Private company limited by shares | Live |
| Opfibra (HongKong) Telecom Limited | Private company limited by shares | Live |
| HONGKONG PATRICK TELECOM LIMITED | Private company limited by shares | Dissolved |
| Hongshi (Hongkong) Telecom Services Co., Limited | Private company limited by shares | Live |
| SHATIN TELECOM (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG SINTONG TELECOM LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SOAR TELECOM COMPANY LIMITED | | Live |
| STONE TELECOM (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| HongKong Best Suppliers Telecom Co., Limited | Private company limited by shares | Dissolved |
| HONGKONG CHUNGHA TELECOM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONGKONG ROVAN TELECOM TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG TELECOM NETWORK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SOKEA TELECOM TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG TONGTIANDI TELECOM TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HONGKONG TENGYUANTONG TELECOM EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| Hongkong DS Telecom Trading Co., Limited | | Live |
| HONGKONG WUZHOU TELECOM CORPORATION LIMITED | Private company limited by shares | Live |
| XINGQIU HONGKONG TELECOM LIMITED | | Live |
| HONGKONG XPHONE TELECOM CO., LIMITED | Private company limited by shares | Live |
| HONGSING TELECOM LIMITED | Private company limited by shares | Live |
| HONOR TELECOM COMPANY LIMITED | Private company limited by shares | Live |
| NEW FLY HORSE TELECOM LIMITED | Private company limited by shares | Live |
| HOSHING TELECOM LIMITED | Private company limited by shares | Dissolved |
| SIX HOUSE TELECOM LIMITED | Private company limited by shares | Live |
| Smart House Telecom Group Limited | Private company limited by shares | Live |
| Huahui Telecom Limited | | Live |
| Huawei Telecom Technology (HK) CO., Limited | Private company limited by shares | Live |
| HUAXUN TELECOM ELECTRONICS LIMITED | | Live |
| Huayu Telecom Co., Limited | Private company limited by shares | Live |
| HUDGSON TELECOM HOLDING LIMITED | Private company limited by shares | Dissolved |
| HUDSON TELECOM LIMITED | Private company limited by shares | Live |
| Huicast Telecom Limited | | Live |
| Hunter Telecom Limited | Private company limited by shares | Live |
| Husing Telecom Limited | Private company limited by shares | Live |
| HUTCHISON TELECOM FINANCE LIMITED | Private company limited by shares | Live |
| HUTEL TELECOM (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CHINA HYTERA TELECOM TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| i-CABLE Telecom Limited | Private company limited by shares | Live |
| ICARD ASIA TELECOM LIMITED | Private company limited by shares | Dissolved |
| ICLOUD TELECOM LIMITED | Private company limited by shares | Live |