PEM
PEM stands for:
- Pem , pseudonym of Paul Marcus (1901–1972), German-British journalist and writer
- Personnel deployment management , a state authority in North Rhine-Westphalia
- Photoelastic modulator , an optical component for modulating the polarization state of light
- Polymer electrolyte membrane , see polymer electrolyte fuel cell
- Precise Electrochemical Machining , a special manufacturing process, see Electrochemical Ablation
- Privacy Enhanced Mail
- Protein energy malnutrition, often used synonymously for kwashiorkor
- Proton Exchange Membrane , see proton exchange membrane
- Post Exertional Malaise , see Chronic Fatigue Syndrome
