| WATERKIDS LIMITED | Private company limited by shares | Live |
| WATERKLOOF CONSULTING ASIA LIMITED | Private company limited by shares | Dissolved |
| WATERKNOT-ASIA LIMITED | Private company limited by shares | Live |
| WATERLAKE LIMITED | Private company limited by shares | Live |
| WATERLAND LIMITED | Private company limited by shares | Live |
| WATERLANE LIMITED | Private company limited by shares | Dissolved |
| WATERLEAF HILL LIMITED | Private company limited by shares | Dissolved |
| Waterleau Asia Limited | Private company limited by shares | Live |
| Waterlemon Limited | | Live |
| WATERLINES LIMITED | Private company limited by shares | Dissolved |
| WATERLINK LIMITED | Private company limited by shares | Live |
| HONG KONG WATERLINK TRADING CO., LIMITED | Private company limited by shares | Live |
| WATERLINK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WATERLINK (H.K.) LIMITED | Private company limited by shares | Dissolved |
| WATERLINK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| WATERLINK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WATERLINK INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| WATERLINK PACIFIC LIMITED | Private company limited by shares | Dissolved |
| WATERLINK REGIONAL LIMITED | Private company limited by shares | Dissolved |
| WATERLINK TRADING LIMITED | Private company limited by shares | Dissolved |
| WATERLOO COMPANY LIMITED | Private company limited by shares | Dissolved |
| WATERLOO LIMITED | Private company limited by shares | Dissolved |
| WATERLOO COMPANY LIMITED | Company limited by guarantee | Live |
| WATERLOO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| WATERLOO INVESTMENTS LIMITED | | Live |
| Waterloo Jishu Limited | Private company limited by shares | Live |
| MEMORY OF WATERLOO LIMITED | Private company limited by shares | Live |
| WATERLOO NETWORK COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Waterloon Trading Limited | Private company limited by shares | Live |
| WATERLOY LIMITED | Private company limited by shares | Live |
| WATERLUX LIMITED | Private company limited by shares | Live |
| Watermains Limited | Private company limited by shares | Live |
| WATERMAN LIMITED | Private company limited by shares | Dissolved |
| WATERMAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK Waterman Limited | Private company limited by shares | Live |
| WATERMAN MARKET LIMITED | Private company limited by shares | Live |
| WATERMARK LIMITED | Private company limited by shares | Dissolved |
| WATERMARK INC LIMITED | Private company limited by shares | Dissolved |
| WATERMARK COMPANY LIMITED | Private company limited by shares | Dissolved |
| WATER-MARKS GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| Watermarks Investment Limited | Private company limited by shares | Live |
| WATERMART PUMPS & EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| WATERMATE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WATERMELON COMPANY LIMITED | Private company limited by shares | Live |
| Watermelon Beauty Limited | | Live |
| OCEAN BIG WATERMELON LIMITED | | Live |
| WATERMILL LIMITED | Private company limited by shares | Dissolved |
| Watermoon Limited | Private company limited by shares | Live |
| WATERN LIMITED | Private company limited by shares | Dissolved |
| WATERNAIDA GROUP LIMITED | | Live |
| Waternics Limited | Private company limited by shares | Live |
| Wateron Limited | Private company limited by shares | Live |
| Wateron Technology (Hong Kong) Company Limited | Private company limited by shares | Live |
| WATERON TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| WATERONE HK LIMITED | Private company limited by shares | Live |
| WATERORCHID HILL LIMITED | Private company limited by shares | Live |
| HK YUNLANG WATERPARK FACILITIES CO., LIMITED | Private company limited by shares | Dissolved |
| Splash Waterpark Management Consulting Limited | Private company limited by shares | Live |
| WATERPARKS LIMITED | Private company limited by shares | Dissolved |
| WATERPERRY LIMITED | Private company limited by shares | Dissolved |
| HO WAI WATERPIPE CO., LIMITED | Private company limited by shares | Live |
| SUM KEE WATER-PIPE DRAINAGE LIMITED | Private company limited by shares | Dissolved |
| LEE SUM KEE WATER-PIPE DRAINAGE LIMITED | Private company limited by shares | Live |
| KONG'S WATER-PIPE ENGINEERING LIMITED | Private company limited by shares | Live |
| Wing Lik Waterpipe Engineering Limited | Private company limited by shares | Live |
| On Ying Water-Pipe Engineering Limited | | Live |
| HONG HONG WATERPIPE LIMITED | | Live |
| Giant Spring Waterpipe Engineering Company Limited | Private company limited by shares | Live |
| Waterpipeplus (HK General Agent) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKD12) COMPANY LIMITED | Private company limited by shares | Live |
| Waterpipeplus (HKI07) Co. Limited | Private company limited by shares | Live |
| WaterpipePlus (HKK02) Co. Limited | Private company limited by shares | Live |
| WaterpipePlus (HKL07) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKM01) LIMITED | Private company limited by shares | Live |
| Waterpipeplus (HKO06) Co. Limited | Private company limited by shares | Live |
| Waterpipeplus (HKQ14) Co. Limited | Private company limited by shares | Live |
| WATERPIPEPLUS (HKR05) LIMITED | Private company limited by shares | Live |
| KEUNG KEE WATER-PIPES & DRAINAGE SERVICE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WATERPLAN PROJECTS LIMITED | Private company limited by shares | Live |
| WATERPLUS (HK) LIMITED | Private company limited by shares | Live |
| JP WATERPOWER CO., LIMITED | Private company limited by shares | Live |
| WATERPOWER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WaterPro Company Limited | Private company limited by shares | Live |
| WATERPRO (HONG KONG) LIMITED | Private company limited by shares | Live |
| NAN BON WATERPROOF COMPANY LIMITED | Private company limited by shares | Live |
| New People Assept Construction Waterproof Engineering Limited | Private company limited by shares | Live |
| Sky Dragon Waterproof Limited | Private company limited by shares | Live |
| HONG KONG PANTHERS WATERPROOF TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| France JCDecaux Waterproof Company Limited | Private company limited by shares | Live |
| SINGAPORE WATERPROOF TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SKY WATERPROOFER & CONTRACTOR COMPANY LIMITED | Private company limited by shares | Live |
| YUE WO WATERPROOFING COMPANY LIMITED | Private company limited by shares | Live |
| ACHIEVE WATERPROOFING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA WATERPROOFING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Chiu Lee Waterproofing Company Limited | Private company limited by shares | Live |
| SCIENTIFIC EPOXY INJECTION AND WATERPROOFING CONSULTANT LIMITED | Private company limited by shares | Live |
| Euro Pacific Waterproofing Limited | Private company limited by shares | Live |
| GENERAL WATERPUMP LIMITED | Private company limited by shares | Live |
| VITALITY WATERPURE LIMITED | Private company limited by shares | Live |
| WATERRA INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |