- ACDEP stands for Acid Deposition
- ACDEP stands for Association of Church Development Projects (Tamale, Northern Region, Ghana)
- ACDEP stands for Atmospheric Chemistry and Deposition Model
- ACDEP stands for Army Concept Development and Experimentation Program (US DoD)
- ACDEP stands for Air-Conditioned Depot (Eveleigh, NSW, Australia rail facility)
ACDEP