| AMERITECH ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| AMERITECH RESEARCH LIMITED | Private company limited by shares | Dissolved |
| AMERITECH SYSTEM LIMITED | Private company limited by shares | Dissolved |
| AMERITEX LIMITED | Private company limited by shares | Live |
| AMERITRADE LIMITED | Private company limited by shares | Live |
| TD Ameritrade Asia Holding Company Limited | Private company limited by shares | Live |
| ASIAN AMERI-TRADER LIMITED | Private company limited by shares | Live |
| AMERITRANS INTERNATIONAL LOGISTICS LIMITED | Private company limited by shares | Live |
| Ameritrans International Logistics Co., Limited | Private company limited by shares | Live |