| SEN J SIDDAL LIMITED | Private company limited by shares | Live |
| Siddbetter Limited | Private company limited by shares | Live |
| SIDDENHAM LIMITED | Private company limited by shares | Dissolved |
| SIDDER ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SIDDH ENTERPRISES LIMITED | Private company limited by shares | Live |
| Siddhanth Jewellers Limited | Private company limited by shares | Live |
| Siddhartha, Limited | Private company limited by shares | Live |
| Siddhartha Film Limited | Private company limited by shares | Live |
| SIDDHARTHA'S INTENT LIMITED | Company limited by guarantee | Live |
| SIDDHAS LIMITED | Private company limited by shares | Live |
| Siddhi HK Limited | Private company limited by shares | Live |
| SIDDHIVINAYAK LIMITED | Private company limited by shares | Live |
| SIDDONS LIMITED | Private company limited by shares | Dissolved |