| Junz Communication (HK) Technology Co., Limited | Private company limited by shares | Live |
| HK KAIQI COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KASI COMMUNICATION (HK) LIMITED | Private company limited by shares | Live |
| Katuolink Communication Limited | Private company limited by shares | Live |
| KEHONG COMMUNICATION (HK) CO., LIMITED | Private company limited by shares | Live |
| KENDOO COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| KENWA COMMUNICATION COMPANY LIMITED | Private company limited by shares | Live |
| Kerry Communication Limited | Private company limited by shares | Live |
| KESHENGDA COMMUNICATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| King (China) Culture Communication Co., Limited | Private company limited by shares | Live |
| KINGCOM COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KINGHONG COMMUNICATION LIMITED | Private company limited by shares | Live |
| KINGLONG COMMUNICATION LIMITED | Private company limited by shares | Live |
| KINGNUO COMMUNICATION ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| KINGPO DIGITAL COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| Kingsize Visual Communication Co Limited | Private company limited by shares | Live |
| KINGSUN COMPUTER NETWORK COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| HK KINGSUN OPTICAL COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| KINGTON COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| KingWave Communication Technology (HK) Co., Limited | Private company limited by shares | Live |
| KingWe Communication Co., Limited | Private company limited by shares | Live |
| KINGWIN COMMUNICATION ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| Kintel Communication Limited | Private company limited by shares | Live |
| Kirin Communication Limited | Private company limited by shares | Live |
| KIRIN COMMUNICATION EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| K-LINK Communication Limited | Private company limited by shares | Live |
| Koobee Communication Limited | Private company limited by shares | Live |
| CHINA KOREA COMMUNICATION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KOREA COMPUTER & COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| KOWLOON COMMUNICATION (HK) LIMITED | Private company limited by shares | Dissolved |
| KRAFT COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Kreet Communication (HK) Co., Limited | Private company limited by shares | Live |
| KSSN COMMUNICATION LIMITED | Private company limited by shares | Live |
| KSTAR COMMUNICATION TECH LIMITED | Private company limited by shares | Live |
| KSUN COMMUNICATION TRADING CO., LIMITED | Private company limited by shares | Live |
| KYOCERA COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Laaiba Communication Limited | Private company limited by shares | Live |
| COMMUNICATION RESEARCH LAB. CO. LIMITED | Private company limited by shares | Dissolved |
| ENCORE COMMUNICATION LABORATORIES LIMITED | Private company limited by shares | Dissolved |
| Lachat Communication Networks Limited | Private company limited by shares | Live |
| NINGBO LAITUO COMMUNICATION EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| LANGDE COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| Art Muse Language and Communication Academy Limited | Private company limited by shares | Live |
| LANKO COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| LANSTRONG COMMUNICATION HK LIMITED | Private company limited by shares | Dissolved |
| LanYi Communication Technology Co., Limited | Private company limited by shares | Live |
| CHINA LAOJIA CULTURAL COMMUNICATION LIMITED | | Live |
| LAST MINUTE COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| LeadTel RF Communication Technologies Limited | Private company limited by shares | Dissolved |
| Legend Communication Limited | Private company limited by shares | Live |
| LEMON COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| LENSUN COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LEQIN COMMUNICATION LIMITED | Private company limited by shares | Live |
| LETTER COMMUNICATION LIMITED | Private company limited by shares | Live |
| LEXA COMMUNICATION (ASIA) LIMITED | Private company limited by shares | Live |
| LIANGSHENG COMMUNICATION LIMITED | Private company limited by shares | Live |
| LIANKE COMMUNICATION CO. LIMITED | Private company limited by shares | Dissolved |
| LianYuan Communication Technology Co., Limited | Private company limited by shares | Dissolved |
| Wufu Life Cultural Communication Co., Limited | Private company limited by shares | Live |
| LIGA COMMUNICATION LIMITED | Private company limited by shares | Live |
| LIGHT KING CHINA COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| Light Speed Data Communication Co., Limited | Private company limited by shares | Live |
| LIME COMMUNICATION LIMITED | Private company limited by shares | Live |
| LINCO COMMUNICATION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| LEASE LINE COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| POWER LINE COMMUNICATION LIMITED | Private company limited by shares | Live |
| Communication Link Co., Limited | Private company limited by shares | Live |
| GOLD LINK COMMUNICATION LIMITED | | Live |
| Communication Link international Limited | | Live |
| COMMUNICATION LINKAGE LIMITED | Private company limited by shares | Live |
| LINKING COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| LinkNet Communication International Limited | Private company limited by shares | Live |
| Tri Links Communication Limited | Private company limited by shares | Live |
| Linkway Communication Limited | Private company limited by shares | Live |
| YUE LONG COMMUNICATION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| LONGILATI COMMUNICATION CO. LIMITED | Private company limited by shares | Live |
| LONGKANG COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LONGKOM COMMUNICATION CONSULTANT (HK) GROUP LIMITED | Private company limited by shares | Live |
| LONGSHENG COMMUNICATION LIMITED | Private company limited by shares | Live |
| LONGTAI COMMUNICATION CONSULTANCY LIMITED | Private company limited by shares | Live |
| LONGTENG COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LONG-WALL COMMUNICATION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| LONGYI COMMUNICATION TECHNIQUE LIMITED | Private company limited by shares | Dissolved |
| YU LOVE COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| STAR LOVE CULTURE COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| LTJTEC Communication (HK) Limited | Private company limited by shares | Dissolved |
| LUCKY COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| CLAIR DE LUNE COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| TAI LUNG COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Lupercal Communication Limited | Private company limited by shares | Live |
| MABUHAY HK COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| MABUHAY COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Macau Communication Company Limited | Private company limited by shares | Live |
| BOWEI COMMUNICATION MACHINERY COMPANY LIMITED | Private company limited by shares | Live |
| EASY MADE COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| MADHYAM COMMUNICATION LIMITED | Private company limited by shares | Live |
| MAGITECH COMMUNICATION (HK) CO., LIMITED | Private company limited by shares | Live |
| MAGNETIC COMMUNICATION (H.K.) CO., LIMITED | Private company limited by shares | Live |
| mai-Idea Communication Limited | Private company limited by shares | Dissolved |
| MAISON COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |