| Tunkee Catering Operation and Innovation Consultancy Limited | Private company limited by shares | Live |
| TUNKI PLAYGROUND TOYS CO., LIMITED | Private company limited by shares | Live |
| TUNKI INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Tunku Limited | Private company limited by shares | Live |
| HK TUNLAN LIMITED | Private company limited by shares | Live |
| TUNLANE INTERNATIONAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| TUNLEY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TUNLIFE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| TUNLIT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TUNLIT (HONG KONG) LIMITED | Private company limited by shares | Live |
| TUNLLIAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNNEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNNEL LIMITED | Private company limited by shares | Dissolved |
| MTD-KE ABERDEEN TUNNEL OPERATIONS COMPANY LIMITED | Private company limited by shares | Live |
| TUNNEL ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| ARTORIA ROAD AND TUNNEL LIGHTING LIMITED | Private company limited by shares | Dissolved |
| Clean Tunnel Air Asia Limited | | Live |
| BEST TUNNEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNNEL BUILDING SUPPLIES LIMITED | Private company limited by shares | Live |
| CLEAN TUNNEL AIR CHINA LIMITED | Private company limited by shares | Live |
| TUNNEL INVESTMENT (CHINA) COMPANY LIMITED | Private company limited by shares | Live |
| Tunnel Cloud Co., Limited | | Live |
| HOPE TUNNEL RESOURCES CO., LIMITED | Private company limited by shares | Live |
| TUNNEL TRADING CO., LIMITED | Private company limited by shares | Live |
| COLOUR TUNNEL LIMITED | Private company limited by shares | Dissolved |
| TUNNEL VISION COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| IMS TUNNEL CONSULTANCY LIMITED | Private company limited by shares | Live |
| Tunnel Technica Consulting Limited | Private company limited by shares | Live |
| LONG TUNNEL FAR EAST LIMITED | Private company limited by shares | Dissolved |
| TIME TUNNEL GLOBAL INVESTMENT LIMITED | Private company limited by shares | Live |
| GOLDEN TUNNEL LIMITED | Private company limited by shares | Dissolved |
| HANGZHOU TUNNEL HOMEWARE CO., LIMITED | Private company limited by shares | Live |
| RICH TUNNEL (HK) INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA SMART UTILITY TUNNEL HOLDINGS LIMITED | Private company limited by shares | Live |
| NEW HONG KONG TUNNEL COMPANY LIMITED | Private company limited by shares | Live |
| SHANGHAI TUNNEL (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Clean Tunnel Air HongKong Co., Limited | | Live |
| EIGHTH TUNNEL INTERNATIONAL TRADING LIMITED -THE- | Private company limited by shares | Dissolved |
| King Source Tunnel Management Consultants Limited | Private company limited by shares | Live |
| ROAD KING TUNNEL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| KOWLOON-SHATIN TUNNEL COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| IWS Tunnel Management Limited | Private company limited by shares | Live |
| CENTRAL CROSS HARBOUR TUNNEL MANAGEMENT COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| MACK & COMPANY TUNNEL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| TAIWAN MAZU 88 TUNNEL WINE CO., LIMITED | Private company limited by shares | Dissolved |
| TUNNEL AND MINING COMPANY LIMITED | Private company limited by shares | Live |
| PAUL Y. (NEW TUNNEL) LIMITED | Private company limited by shares | Live |
| PAUL Y. TUNNEL ENGINEERING CO. LIMITED | Private company limited by shares | Dissolved |
| DISCOVERY BAY ROAD TUNNEL COMPANY LIMITED | Private company limited by shares | Live |
| TUNNEL ENGINEERING SERVICES (HONGKONG) LIMITED | Private company limited by shares | Live |
| Tunnel Tech Services Limited | Private company limited by shares | Dissolved |
| KUM SHING TUNNEL MANAGEMENT LIMITED | Private company limited by shares | Live |
| S.I. - PAUL Y. - CANVEST TUNNEL COMPANY LIMITED | | Live |
| TUNNEL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| FUJIAN QUANZHOU TUNNEL SPORTING GOODS LIMITED | Private company limited by shares | Live |
| HK State Tunnel Group Limited | Private company limited by shares | Live |
| Tunnel Technologies Limited | Private company limited by shares | Live |
| Time Tunnel Limited -The- | Private company limited by shares | Live |
| TUNNEL VISION, LIMITED | Private company limited by shares | Dissolved |
| WEALTH TUNNEL LIMITED | Private company limited by shares | Live |
| SPACE TUNNEL WEISHI HOLDING CO., LIMITED | Private company limited by shares | Live |
| WELL TUNNEL LIMITED | Private company limited by shares | Dissolved |
| WESTERN HARBOUR TUNNEL COMPANY LIMITED | Private company limited by shares | Live |
| WILSON TUNNEL MANAGEMENT LIMITED | Private company limited by shares | Live |
| YEE HOP TUNNELLING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAN CHUEN TUNNELLING COMPANY LIMITED | Private company limited by shares | Live |
| BC MAN CHUEN TUNNELLING LIMITED | Private company limited by shares | Dissolved |
| EAGLESTONE TUNNELLING LIMITED | Private company limited by shares | Dissolved |
| Tunnelling Engineering (Hong Kong) Corp. Limited | Private company limited by shares | Live |
| SMART WIN ENGINEERING & TUNNELLING LIMITED | Private company limited by shares | Live |
| Herrenknecht Tunnelling Equipment Hong Kong Limited | Private company limited by shares | Live |
| TUNNELLING EQUIPMENT AND SERVICES LIMITED | Private company limited by shares | Live |
| KANE, TUNNELLING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CHINA TUNNELLING INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| KANE TUNNELLING LIMITED | Private company limited by shares | Live Ceased dormancy on 06-Dec-2010 |
| RED TUNNELLING SERVICES LIMITED | Private company limited by shares | Live |
| tunnelNet Limited | | Live |
| TUNNEX LIMITED | Private company limited by shares | Dissolved |
| EASY TUNNING AGENCIES COMPANY LIMITED | Private company limited by shares | Live |
| STAR TUNNING PROPERTY LIMITED | Private company limited by shares | Live |
| TUNNING INSURANCE SERVICES LIMITED | Private company limited by shares | Live |
| Tunno Ocean Digital Technology Limited | | Live |
| Tunny Limited | | Live |
| TUNON COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TUNPAK INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| TUN'S PAPER (HOLDINGS) LIMITED | Private company limited by shares | Live |
| HONG KONG TUN'S PAPER LIMITED | Private company limited by shares | Live |
| TUNSBRIDGE (CHINA TRADE) LIMITED | Private company limited by shares | Dissolved |
| TUNSBRIDGE INVESTMENTS CO. LIMITED | Private company limited by shares | Dissolved |
| TUNSBRIDGE TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNSEM ELECTRONICS TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Tunsgate Limited | Private company limited by shares | Live |
| TUNSHIAR INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| TUNSO CO. LIMITED | Private company limited by shares | Live |
| TUNSON ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNSON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Tunson Travel Limited | | Live |
| TUNSTALL LIMITED | Private company limited by shares | Dissolved |
| TUNSTALL AGENCIES LIMITED | Private company limited by shares | Dissolved |