| Acronym | Definition |
|---|
| FEMS | Fire and Emergency Services (Washington, DC) |
| FEMS | Federation of European Microbiological Societies |
| FEMS | Fédération des Écomusées et des Musées de Société (French museum association) |
| FEMS | Fédération Européenne des Médecins Salariés (French: European Federation of Salaried Doctors; Belgium) |
| FEMS | Federation of European Materials Societies |
| FEMS | Fire Emergency Medical Services (Washington, DC) |
| FEMS | Florida Electroacoustic Music Studio (University of Florida) |
| FEMS | Fellow of the Minerals Engineering Society |
| FEMS | Facility Equipment Maintenance System (PMEL/TMDE) |
| FEMS | Fatigue and Engine Monitoring System (US Navy) |
| FEMS | Fabrication Engineering Management System |
| FEMS | Finite Ergodic Markov Source |