| Sile Toy Manufacturer Limited | Private company limited by shares | Live |
| SilEagle Limited | Private company limited by shares | Live |
| SilEagle International Limited | Private company limited by shares | Live |
| SILEASE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SILEIGH LIMITED | Private company limited by shares | Live |
| SILEN GARDEN PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| SILENA LIMITED | Private company limited by shares | Dissolved |
| SILENA INVESTMENTS LIMITED | Private company limited by shares | Live |
| SILENA STEEL LIMITED | Private company limited by shares | Dissolved |
| SILENCE LIMITED | Company limited by guarantee | Live |
| SILENCE HK LIMITED | | Live |
| SILENCE LAB LIMITED | | Live |
| Silence In Space Limited | Private company limited by shares | Live |
| THEATRE OF THE SILENCE LIMITED | Company limited by guarantee | Live |
| SILENCES LIMITED | Private company limited by shares | Dissolved |
| SILENCO LIMITED | Private company limited by shares | Dissolved |
| SILENG LIMITED | Private company limited by shares | Live |
| SiLENN Limited | Private company limited by shares | Live |
| Silenod HK Limited | Private company limited by shares | Live |
| SILENSTAR TECH HK LIMITED | Private company limited by shares | Live |
| SILENT JOY LIMITED | | Live |
| SILENT HILL LIMITED | Private company limited by shares | Dissolved |
| SILENT OCEAN LIMITED | Private company limited by shares | Live |
| Silent Solutions Limited | Private company limited by shares | Live |
| Silent Wave Limited -The- | Private company limited by shares | Live |
| Silentium (Asia) Limited | Private company limited by shares | Live |
| Silentmode Limited | Private company limited by shares | Live |
| SILENTNIGHT LIMITED | | Live |
| SilentSense Limited | Private company limited by shares | Dissolved |
| SILENUS & COMPANY LIMITED | Private company limited by shares | Dissolved |
| SILENUS (HONG KONG) LIMITED | Private company limited by shares | Live |
| Silergy Electronics Co., Limited | Private company limited by shares | Live |
| SILESIA LIMITED | Private company limited by shares | Dissolved |
| SILESTEL LIMITED | Private company limited by shares | Dissolved |
| SILETZ AIR LIMITED | Private company limited by shares | Dissolved |
| SILEX LIMITED | Private company limited by shares | Dissolved |
| SILEX LAB LIMITED | Private company limited by shares | Live |
| Silezia Limited | Private company limited by shares | Live |