• American Academy of Neurological and Orthopaedic Surgeons
• American Autoimmune Related Diseases Association
• American Behcet's Disease Association
• American College of Foot and Ankle Surgeons
• American Medical Association
• American Pain Foundation
• Arthritis Foundation
• Arthritis Foundation, Victoria Australia
• Arthritis National Research Foundation
• Arthritis Research Campaign
  (British foundation for basic and clinical research
• Arthritis Society of Canada
• American Society for Bone and Mineral Research
• Australian Rheumatology Association
• British Columbia Fibromyalgia Society
• Childhood Arthritis and Rheumatology Research Alliance
• Clinical Immunology Society
• Colombian Rheumatology Association (en Español)
• Federation of Clinical Immunology Societies (FOCIS)
• Juvenile Scleroderma Network (JSDN)
• Lupus Foundation of America
• Myositis Association of America
• National Marfan Foundation: Connective Issues
• National Organization for Rare Disorders
• National Osteoporosis Foundation
• Paediatric Rheumatology European Society (PReS)
• Royal Society of Medicine
• Scleroderma Foundation
• Sjogren's Syndrome Foundation, Inc.
• Sociedad Española de Reumatología
  (Spanish language site contains information for medical specialists and also for patients)
• Spondylitis Association of America
• Takayasu's Arteritis Research Association
  

World Rheumatology Organizations

• The International League of Associations for Rheumatology (ILAR)
• The European League Against Rheumatism (EULAR)
• The Pan American League of Associations for Rheumatology (PANLAR)
• The Asia Pacific League of Associations for Rheumatology (APLAR)

Medical Journals