- National Athletic Trainers' Association
 - Not-for-profit organisation dedicated to improving the health and well-being of athletes worldwide. - American Alliance for Health, Physical Education, Recreation and Dance
- Supports and assists those involved in physical education, leisure, fitness, dance, and health promotion.
- National Strength and Conditioning Association (NSCA) (2)
- Idea
- Membership organisation for health and fitness professionals. Site features their publications, membership details, and a personal trainer locator
- International Fitness Association
- Provides aerobics and fitness instructors with the basic academic credentials necessary to guide the general population in health and fitness.
- National Gym Association, Inc. (NGA)
- Works to maintain high standards for safety and education in fitness training.
- American Society of Exercise Physiologists
- Committed to the advancement and improvement of exercise physiology.
- Aquatic Fitness Professionals Association International
- Works to advance aquatic fitness professionals with training and information.
- Fitness Professionals
- Offers articles, training courses, details on upcoming events, and fitness products.
- Canadian Aquafitness Leaders Alliance (CALA)
- Specialises in the training and certification of aquafitness leaders through speciality courses and workshops.
- Super Slow Exercise Guild, Inc.
- Professional association of exercise instructors and enthusiasts devoted to higher standards in the fitness industry.
- National High School Coaches Organization
- Focuses on educating, recognising, and supporting high school coaches.
 Singapore Fitness Professionals Federation
- Nonprofit professional body committed to protecting the interest of fitness consumers and promoting quality services.
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