| Zeroone Group co., Limited | Private company limited by shares | Live |
| ZERO-ONE (HONG KONG) TRADING CO., LIMITED | Private company limited by shares | Live |
| Zero-one Industrial Corporation Limited | Private company limited by shares | Dissolved |
| ASIA ZERO-ONE TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| HK ZEROONE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ZEROOT LIMITED | Private company limited by shares | Live |
| ZeroPay Technology Company Limited | Private company limited by shares | Live |
| ZeroPlastic Hong Kong Limited | Private company limited by shares | Live |
| ZEROPLUS CONSULTING SERVICE CO., LIMITED | Private company limited by shares | Dissolved |
| ZEROPLUS ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ZEROPLUS ONLINE LIMITED | Private company limited by shares | Live |
| ZEROPOINT LIMITED | Private company limited by shares | Live |
| Zeropointch Limited | | Live |
| ZEROPORT LIMITED | Private company limited by shares | Live |
| ZEROPROC SOFTWARE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ZERO-REI (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Zerorun Limited | Private company limited by shares | Live |
| ZERO'S COMPANY LIMITED | Private company limited by shares | Live |
| EIGHT ZEROS CREATIVE LIMITED | Private company limited by shares | Live |
| ZEROS VIDEOS LIMITED | Private company limited by shares | Live |
| ZEROSECOND SECURITY LIMITED | Private company limited by shares | Live |
| Zero.Space Limited | Private company limited by shares | Live |
| ZEROSPACEZERO LIMITED | Private company limited by shares | Live |
| ZERO-SUM GAME HOLDINGS LIMITED | Private company limited by shares | Live |
| ZEROTANCE LIMITED | Private company limited by shares | Dissolved |
| ZEROTECH LIMITED | Private company limited by shares | Dissolved |
| ZERO-TEMP ENERGY-SAVING TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| Zero-time (Hong Kong) Limited | | Live |
| ZEROTO 3D ART STUDIO LIMITED | Private company limited by shares | Live |
| HK ZEROUNO LAMP CO., LIMITED | Private company limited by shares | Live |
| ZEROUNO LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Zerous International Co., Limited | | Live |
| Zerowow Limited | Private company limited by shares | Live |
| ZEROXS LIMITED | Private company limited by shares | Live |
| ZERO-Y LIMITED | Private company limited by shares | Live |
| ZEROZERO PROJECT CO., LIMITED | Private company limited by shares | Live |
| ZeroZone Limited | Private company limited by shares | Live |
| ZeroZone Solutions Limited | Private company limited by shares | Live |