| HONG KONG NEW GLOBAL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COMMUNICATIONS GROUP LIMITED | Private company limited by shares | Live |
| HONG KONG HOPE COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| HUAKE COMMUNICATIONS TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| IFONEX COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| IFREEDOM COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| INFOHIGHWAY COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| INFOLINK COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| INTECH COMMUNICATIONS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| INTERSHOP COMMUNICATIONS HONG KONG CO. LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Communications Investment Company Limited | | Live |
| HONG KONG COMMUNICATIONS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| JINBOLI (HONG KONG) COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COMMUNICATIONS JOURNAL LIMITED | Private company limited by shares | Dissolved |
| ADC COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| KB COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| NEW ERA COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COMMUNICATIONS COMPANY LIMITED | Private company limited by shares | Live |
| L-3 COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| WE COMMUNICATIONS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| RLG COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| AM COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| B & B COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| TT Communications (Hong Kong) Limited | Private company limited by shares | Live |
| Hong Kong Wah Jue Communications Limited | | Live |
| HONG FEI COMMUNICATIONS EQUIPMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| COMMUNICATIONS EXCHANGE OF HONG KONG LIMITED | Private company limited by shares | Dissolved |
| NEXT FIFTEEN COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live Ceased dormancy on 25-Jun-2004 |
| Strategy & Communications (Hong Kong) Group Limited | Private company limited by shares | Live |
| IMAGINE COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| KYUSYU SOCIAL COMMUNICATIONS HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| Level 3 Communications Hong Kong Limited | Private company limited by shares | Live |
| MATSUNICHI COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| RELIANCE COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| DC SYSTEMS DIGITAL COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| TRISQUARE COMMUNICATIONS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Xtera Communications Hong Kong Limited | Private company limited by shares | Live |
| YungSheng Communications (Hong Kong) Limited | Private company limited by shares | Dissolved |
| KUBE (HONG KONG) DESIGN COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| Hong Kong Mars Communications Limited | | Live |
| NEVIGATE COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| NITTEL COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| HONG KONG NODER COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| NUANCE COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| O'MASTER COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| A PLUS B (HONG KONG) COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| PRANCE COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| QUANTENNA COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| MICROWAVE RADIO COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG REACH COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| REVERE COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| RICH COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| ROOTS COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SCIENTIFIC COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SHIVA COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SISO COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| Hong Kong si-suma Communications Co., Limited | | Live |
| Hong Kong Smooth Communications Limited | Private company limited by shares | Live |
| Hong Kong Soho Communications Limited | Private company limited by shares | Live |
| STAR COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| KKT (HONG KONG) COMMUNICATIONS SYSTEM HOLDING LIMITED | Private company limited by shares | Live |
| TAKADA COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Tata Communications (Hong Kong) Limited | Private company limited by shares | Live |
| CHINA-BESTCOM COMMUNICATIONS TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| TCL COMMUNICATIONS TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Satellite Communications Technology Limited | Private company limited by shares | Live |
| TELE PACIFIC COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| L THREE COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG NEW TIMES COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| TOKUMA COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG NET TONE COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TOP-LOGICAL COMMUNICATIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOPWISE COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TOPWISE COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| TRANSPACE COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ULTRA COMMUNICATIONS (CHINA & HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Zoom Video Communications (Hong Kong) Limited | Private company limited by shares | Live |
| VOCALTEC COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| VOICE & DATA COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| V-SQUARED COMMUNICATIONS (HONG KONG) LIMITED | Private company limited by shares | Live |
| WINSTAR COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG WONDERFUL CULTURAL COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| RUI YUAN COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| ZENO COMMUNICATIONS HONG KONG LIMITED | Private company limited by shares | Live |
| HONGDA COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Dissolved |
| HONGTAIDA COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Dissolved |
| Lucky Horse Communications Limited | Private company limited by shares | Live |
| Huachen Communications (Hongkong) Limited | Private company limited by shares | Live |
| HUANDAO COMMUNICATIONS GROUP LIMITED | Private company limited by shares | Dissolved |
| HUATAI COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Live |
| HUAXIN COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| China Huaying Communications Co., Limited | Private company limited by shares | Live |
| HUAYING DATA COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Live |
| Huayucheng Communications Limited | Private company limited by shares | Live |
| AUSTIN HUGHES COMMUNICATIONS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| HUMAN COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| HUNG'S COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| HYBRID COMMUNICATIONS PTE LIMITED | Private company limited by shares | Live |
| i-CABLE Communications Limited | Public company limited by shares | Live |
| ICE-POINT ENTERTAINMENT AND COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |