Medical Organizations
- Electron Microscopy Society of America (EMSA)
- Electro-Nucleonics Inc (ENI)
- El Paso County Medical Society (EPCMS)
- EMDR International Association (EMDRIA)
- Emergency Medicine Residents' Association (EMRA)
- Emergency Medicine Trainees' Association (EMTA)
- Employee Assistance Professionals Association (EAPA)
- Endocrine Nurses Society (ENS)
- Endocrine Society (ES)
- Enquete de Prevention Secondaire de l'lnfarctus de Myocarde; Secondary Prevention of Myocardial Infarction Research Group (EPSIM)
- Entomological Society of America (ESA)
- Entomological Society of Canada (ESC)
- Equine Assisted Growth and Learning Association (EAGALA)
- Europäische Akademie für Medizinische Fortbildung; European Academy of Medical Education (EAMF)
- Europäische Gesellschaft für plastische Chirurgie; European Society of Plastic Surgery (EGPC)
- Europäische StrahlenschutzGesellschaft; European Society of Radiation Protection (ESG)
- European Academy of Allergy and Clinical Immunology (EAACI)
- European Association for Cancer Research (EACR)
- European Association for Cranio-Maxillo-Facial Surgery (EACMFS)
- European Association for the Study of the Liver (EASL)
- European Association for Transactional Analysis (EATA)
- European Association for Vision and Eye Research (AER)
- European Association of Nuclear Medicine (EANM)
- European Association of Plastic Surgeons (EAPS)
- European Atherosclerosis Society (EAS)
- European Atomic Energy Community (EAEC)
- European Atomic Energy Society (EAES)
- European Chiropractors' Union (ECU)
- European Congress of Obstetric Anaesthesia and Analgesia (ECOAA)
- European Congress on Electron Microscopy (EUREM)
- European Congress on Optical Communications (ECOC)
- European Contact Lens Society of Ophthalmologists (ECLSO)
- European Cooperative Group for Blood and Marrow Transplantation (ECGBMT)
- European Cystic Fibrosis Society (ECFS)
- European Dialysis and Transplant Nurses Association (EDTNA)
- European Family Therapy Association (EFTA)
- European Federation for Medical Informatics (EFMI)
- European Federation of Bottled Waters (EFBW)
- European Federation of Masseurs and Kinesitherapists (EFMK)
- European Federation of Pharmaceutical Industry and Associations (EFPIA)
- European Foundation for the Study of Diabetes (EASD)
- European Hematology Association (EHA)
- European League against Rheumatism (EULAR)
- European Molecular Biology Organization (EMBO)
- European Neuroendocrine Association (ENA)
- European Nuclear Energy Agency (ENEA)
- European Organisation for Research and Treatment of Cancer (EORTC)
- European Organization for Quality (EOQ)
- European Organization for Research on Treatment of Cancer (OERTC)
- European Organization for the Control of Circulatory Diseases (EOCCD)
- European Orthodontic Society (EOS)
- European Paediatric Respiratory Society (EPRS)
- European Renal Association – European Dialysis and Transplant Association (ERA-EDTA)
- European Sleep Research Society (ESRS)
- European Societies of Toxicology (EST)
- European Society for Artificial Organs (ESAO)
- European Society for Clinical Investigation (ESCI)
- European Society for Comparative Physiology and Biochemistry (ESCPB)
- European Society for Dermatological Research (ESDR)
- European Society for Paediatric Endocrinology (ESPE)
- European Society for Paediatric Research (ESPR)
- European Society for Pediatric Gastroenterology (ESPGA)
- European Society for Surgical Research (ESSR)
- European Society for Therapeutic Radiology and Oncology (ESTRO)
- European Society of Anaesthesiology (ESA)
- European Society of Animal Cell Technology (ESACT)
- European Society of Biochemical Pharmacology (ESBP)
- European Society of Cardiology (ESC)
- European Society of Cardiovascular Surgery (ESCVS)
- European Society of Clinical Microbiology and Infectious Diseases (ESCMID)
- European Society of Gastrointestinal Endoscopy (ESGE)
- European Society of Human Reproduction and Embryology (ESHRE)
- European Society of Paediatric Hematology and Immunology (ESPHI)
- European Society of Paediatric Radiology (ESPR)
- European Society of Parenteral and Enteral Nutrition (ESPEN)
- European Society of Physical and Rehabilitation Medicine (ESPRM)
- European Space Research and Technology Centre (ESTEC)
- European Space Research Organisation (ESRO)
- European Strabismological Association (ESA)
- European Study Group for Cell Proliferation (ESGCP)
- European Teratology Society (ETS)
- European Thrombosis Research Organization (ETRO)
- European Thyroid Association (ETA)
- European Tissue Culture Society (ETCS)
- European Working Group for Psychosomatic Cancer Research (EUPSYCA)
- European Working Group on Cardiac Pacing (EWGCP)
- European Working Party on High Blood Pressure in the Elderly (EWPHE)
- Evidence Based Birth (EBB)
- Extracorporeal Life Support Organization (ELSO)
- Family Nutrition and Physical Activity (FNPA)
- Federación Internacional de Medicina Fisica y Rehabilitación; International Federation of Physical Medicine and Rehabilitation (FIMF)
- Federal Radiation Council (FRC)
- Federation Europeenne de Pneumologie; European Society of Pneumology (FEP)
- Federation Europeenne d'lnformatique Médicale; European Federation of Medical Information (FEIM)
- Fédération Hospitalière de France; Hospital Federation of France (FHF)
- Fédération Internationale de Gynécologie et d'Obstétrique; International Federation of Gynecology and Obstetrics (FIGO)
- Federation Internationale de Gynecologie Infantile et Juvenile; International Federation of Infantile and Juvenile Gynecology (FIGIJ)
- Fédération Internationale de Médecine du Sport; International Federation of Sports Medicine (FIMS)
- Fédération internationale de médecine physique et réadaptation; International Federation of Physical Medicine and Rehabilitation (FIMP)
- Fédération Internationale de Psychothérapie Médicale; International Federation of Medical Psychotherapy (FIPM)