| SIMEC TM LIMITED | Private company limited by shares | Live |
| SIMEC CARGOLINES LIMITED | Private company limited by shares | Live |
| SIMEC Energy Group Limited | | Live |
| SIMEC GROUP LIMITED | Private company limited by shares | Live |
| SIMEC INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SIMEC INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SIMEC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SIMEC SHIPPING LIMITED | Private company limited by shares | Live |
| SIMECO LIMITED | Private company limited by shares | Live |