| Acronym | Definition |
|---|
| IDEM | Indiana Department of Environmental Management |
| IDEM | Instituto de Derecho y Empresa (Spanish) |
| IDEM | Intradural Extramedullary (tumor) |
| IDEM | Italian Derivatives Market |
| IDEM | International Dental Exhibition and Meeting |
| IDEM | Informations- und Dokumentationsstelle Ethik in der Medizin (German) |
| IDEM | Index, Debt and Energy Market |
| IDEM | Iterative Demapping and Decoding |
| IDEM | Index of Democratization |
| IDEM | Iranian Diesel Engine Manufacturing Co |
| IDEM | Institute for Diabetes, Endocrinology and Metabolism (South Africa) |
| IDEM | Integrated Design and Modeling |