| Acronym | Definition |
|---|
| PEMS | Patient Evaluation and Management System (M2S, Inc.) |
| PEMS | Predictive Emissions Monitoring System |
| PEMS | Portable Emissions Measurement System |
| PEMS | Peninsulas Emergency Medical Services (Gloucester, VA) |
| PEMS | Program Evaluation and Monitoring System |
| PEMS | Poult Enteritis Mortality Syndrome |
| PEMS | Pressure Equalizing Module (water pressure; Florida) |
| PEMS | Pharmacy Education Management System |
| PEMS | Proactive Energy Management System |
| PEMS | Post-Exercise Muscle Soreness |
| PEMS | Paris Evangelical Missionary Society |
| PEMS | Power and Energy Management Solutions |
| PEMS | Perpetual Enterprise Management Service |
| PEMS | Property Equipment Management System (PMS Systems Corporation) |
| PEMS | Pre-and Early Modern Studies |
| PEMS | Postal Emergency Management System |
| PEMS | Physical, Emotional, Mental, Spiritual (holistic healing) |
| PEMS | Programmable Electrical Medical System |
| PEMS | Performance Effectiveness Management System |
| PEMS | Phoenix Early Music Society (Phoenix, AZ) |
| PEMS | Programmable Electronic Medical Systems |
| PEMS | Process Environmental Monitoring System |
| PEMS | Provider Enhanced Management Services (Elwyn) |
| PEMS | Project Estimation and Management System |
| PEMS | Pump Efficiency Monitoring System (electrical systems) |
| PEMS | Premium Energy Management Services (Rancho Cordova, CA) |
| PEMS | Portable Environmental Monitoring Station (US DOE) |
| PEMS | Porcelain Enamel Metal Substrate (circuitry) |