The American Association of Avian Pathologists is an international association whose mission is to facilitate member collaboration to advance science-based knowledge, expertise, and education on poultry health, welfare, and food safety. It is open to anyone who is engaged in some phase of poultry health. Each year AAAP conducts a scientific program and symposium where the latest findings and issues regarding poultry health are shared and discussed. AAAP also publishes Avian Diseases, a quarterly, international journal for original basic or clinical research from various disciplines including microbiology, immunology, and pathology. In addition, AAAP publishes many educational materials on avian health including Diseases of Poultry and the Avian Disease Manual. AAAP committees and interest groups offer members a forum for discussion and action on specific poultry topics and issues. Through the AAAP Foundation, scholarships and awards are given each year to support those who are striving for careers in poultry health and acknowledge outstanding achievement in the area of poultry health. AAAP members are veterinary practitioners, diagnosticians, researchers, and students interested in poultry health and medicine. It was founded in 1957. The organizing group consisted of poultry pathologists who met at the poultry section of the American Veterinary Medical Association (AVMA) convention’s scientific program. Once started, AAAP began organizing a poultry scientific program that replaced the AVMA’s. AAAP’s membership has always been open to non-veterinarians in contrast to the AVMA’s membership criteria, but AAAP maintains close ties with the AVMA. It is an allied constituent organization to the AVMA. Full AAAP members must be AVMA members.