| DELTAVOX COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DENSE COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DERWENT COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DESIGN COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| 8A Design Communications Limited | Private company limited by shares | Dissolved |
| ADVANCED DESIGN COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| COMMUNICATIONS AND DESIGN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MORGAN & CO DESIGN & COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| TWINKLE DESIGN & COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DEXIN COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIALTRON COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DIALTRON COMMUNICATIONS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| DIAMONDCAST COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DICKSON COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIGI COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DIGI HUB COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIGICOM COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DIGINET COMMUNICATIONS NETWORK LIMITED | Private company limited by shares | Dissolved |
| DIGITAL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| BTL DIGITAL COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| CENTURY DIGITAL COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIGITCAST COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIGITEL COMMUNICATIONS INC. LIMITED | Private company limited by shares | Live |
| DIICALL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DINGQIN COMMUNICATIONS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DINGTONE COMMUNICATIONS, LIMITED | Private company limited by shares | Live |
| Direct Communications Limited | Private company limited by shares | Live |
| DIRECT COMMUNICATIONS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| DIRECT INTEGRATED COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| Discovery Communications Limited | Private company limited by shares | Live |
| DIVA COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DIYR COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| Diz! Communications Limited | Private company limited by shares | Dissolved |
| Diz! Communications Limited | | Live |
| HK DK-TEL COMMUNICATIONS EQUIPMENT LIMITED | Private company limited by shares | Live |
| DOLLY COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DOLLY COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Live |
| DOLLY COMMUNICATIONS AND PUBLISHING LIMITED | Private company limited by shares | Dissolved |
| Xu Dong Communications (HK) Limited | Private company limited by shares | Dissolved |
| DONGEYIXIN COMMUNICATIONS (INTERNATIONAL)CO., LIMITED | Private company limited by shares | Live |
| DOVE COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DOWAX COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| TEL DRAGON COMMUNICATIONS CO. LIMITED | Private company limited by shares | Live |
| DRAGON-INN COMMUNICATIONS COMPANY LIMITED | Private company limited by shares | Live |
| DREAM COMMUNICATIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| DARE TO DREAM COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DREAM TEAM COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| dreamUp Communications Limited | Private company limited by shares | Live |
| Dtalk Communications Technology Co., Limited | Private company limited by shares | Dissolved |
| DUET COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DUNN COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DUNYA COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DURALITE COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DURATONE COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DYNACOM COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| DYNAMIC COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| DYNASTY COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| EAON COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| FAR EAST COMMUNICATIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| East Communications Limited | Private company limited by shares | Dissolved |
| Far East Communications Limited | Private company limited by shares | Live |
| FIRST EASTERN COMMUNICATIONS GROUP LIMITED | Private company limited by shares | Dissolved |
| EAST-WEST COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| EASY COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| ECLIPSE COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| New Economy Communications Limited | Private company limited by shares | Live |
| ECreative Communications Limited | Private company limited by shares | Dissolved |
| Red Edge Communications Limited | Private company limited by shares | Dissolved |
| Nhu Edge Communications, Limited | Private company limited by shares | Dissolved |
| EDKO COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| EDUCATIONAL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| EIKOS COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| EKON - ALL FOR COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| eKoutone Communications Limited | Private company limited by shares | Live |
| ELAINE COMMUNICATIONS ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ELEBANA COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| WIVO COMMUNICATIONS & ELECTRONIC LIMITED | Private company limited by shares | Live |
| ELECTRONICS AND COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| PAN-LINK ELECTRONICS & COMMUNICATIONS CO. LIMITED | Private company limited by shares | Dissolved |
| CLASSIC ELEMENT COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| Eleve Communications Limited | | Live |
| ELITE COMMUNICATIONS (HK) LIMITED | Private company limited by shares | Live |
| ELIVELY COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| Ellu Teo PR & Communications (HK) Limited | Private company limited by shares | Live |
| EMERGING COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| EMPIRE COMMUNICATIONS LIMITED -THE- | Private company limited by shares | Dissolved |
| Empower China Communications HK Limited | Private company limited by shares | Live |
| Endeavour Communications Limited | | Live |
| Energy Communications Limited | Private company limited by shares | Live |
| COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Live |
| TM COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ARTEK COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| EXPRESS COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| FORTUNE COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Live |
| YAT HING COMMUNICATIONS NETWORK ENGINEERING LIMITED | Private company limited by shares | Live |
| INDUCE COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Live |
| LADEN COMMUNICATIONS ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| RICHES GOLD COMMUNICATIONS (H.K.) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Live |
| SUNLINK COMMUNICATIONS ENGINEERING LIMITED | Private company limited by shares | Dissolved |