| BluStar Games Limited | Private company limited by shares | Live |
| BLUSTON INDUSTRY LIMITED | Private company limited by shares | Live |
| Blutankers Limited | Private company limited by shares | Live |
| BluTech IoT Limited | Private company limited by shares | Live |
| BLUTECH ENGINEERING LIMITED | Private company limited by shares | Live |
| Blutek Limited | Private company limited by shares | Live |
| BLU-TOPAZ LIMITED | Private company limited by shares | Live |
| BLUTRON (HK) LIMITED | Private company limited by shares | Dissolved |
| BLUUCORNER INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BLUVAPER TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| BLUW (HONG KONG) LIMITED | Private company limited by shares | Live |
| BLUWAY HK Limited | Private company limited by shares | Live |
| BluWebMedia Limited | Private company limited by shares | Live |
| Bluwhale Limited | | Live |