- AEER stands for Applied Ecology and Environmental Research
- AEER stands for Anthropology of East Europe Review (journal)
- AEER stands for Advanced Extended Echo Ranging
- AEER stands for Association for Engineering Education of Russia
- AEER stands for Alpha Equus English Riders (horseback riding; Fargo, ND)
- AEER stands for Annual Energy Efficiency Ratio
- AEER stands for Attitude Ephemeris and Events Report
AEER