| | | | | | | | |
| Subsidiary | | Jurisdiction of Organization |
| | |
| Amkor Advanced Technology Taiwan, Inc. | | Taiwan |
| Amkor Assembly & Test (Shanghai) Co., Ltd. | | China |
| Amkor Technology Arizona, Inc. | | Arizona |
| Amkor Technology Euroservices, S.A.S. | | France |
| Amkor Technology Germany GmbH | | Germany |
| Amkor Technology Japan, Inc. | | Japan |
| Amkor Technology Korea, Inc. | | Korea |
| Amkor Technology Malaysia Sdn. Bhd. | | Malaysia |
| Amkor Technology Philippines, Inc. (A Branch of a Singapore Company) | | Philippines |
| Amkor Technology Pte. Ltd. | | Singapore |
| Amkor Technology Singapore Investment Pte. Ltd. | | Singapore |
| Amkor Technology Singapore Holding Pte. Ltd. | | Singapore |
| Amkor Technology Singapore Holding Pte. Ltd., Taiwan Branch (A Branch of a Singapore Company) | | Taiwan |
| Amkor Technology Taiwan Ltd. | | Taiwan |
| Amkor Technology Vietnam Limited Liability Company | | Vietnam |
| Amkor Worldwide Services LLC | | Delaware |
| Amkor Worldwide Services LLC - ROHQ (A Branch of a United States Company) | | Philippines |
| ATEP - Amkor Technology Portugal, S.A. | | Portugal |
| Guardian Assets, Inc. | | Delaware |