| | | | | | | | |
| Subsidiary | | Jurisdiction of Organization |
| Iridium Blocker-B Inc. | | Delaware |
| Syncom-Iridium Holdings Corp. | | Delaware |
| Iridium Holdings LLC | | Delaware |
| Iridium Satellite LLC | | Delaware |
| Iridium Constellation LLC | | Delaware |
| Iridium Carrier Holdings LLC | | Delaware |
| Iridium Carrier Services LLC | | Delaware |
| Iridium Government Services LLC | | Delaware |
| Iridium Satellite SA LLC | | Delaware |
| OOO Iridium Services | | Russia |
| OOO Iridium Communications | | Russia |
| Iridium Chile SpA | | Chile |
| Iridium Serviços de Satélites S.A. | | Brazil |
| Iridium Satellite UK Limited | | United Kingdom |