- ADEM stands for Alabama Department of Environmental Management
- ADEM stands for Acute Disseminated Encephalomyelitis
- ADEM stands for Arkansas Department of Emergency Management
- ADEM stands for Arizona Division of Emergency Management (Phoenix, AZ)
- ADEM stands for Advanced Diesel Engine Management (Caterpillar)
- ADEM stands for Administration de l’Emploi (Luxembourg)
- ADEM stands for Ateneo de Manila (Philippines)
ADEM