| Company Name | Type | Status |
|---|---|---|
| Omnicon Limited | Private company limited by shares | Live |
| OMNICON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| OMNICON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| OMNICON EVENTS LIMITED | Private company limited by shares | Live |
| OMNICON FREIGHT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |