In 2003, there were about 3,059 regional, national, and international organizations within the state. National organizations with headquarters in the state include the American Camping Association, located in Martinsville, and the Amateur Athletic Union of the US, the American Legion, the US Gymnastics Federation, and Kiwanis International and Circle K International, all in Indianapolis. National sports and hobby associations based in Indiana include the Academy of Model Aeronautics, the United States Auto Club, the United States Rowing Association, and USA Gymnastics. Professional and educational organizations include the American Theatre Critics Association and Bands of America.
Philanthropic foundations headquartered in Indiana include the Eugene V. Debs Foundation (Terre Haute) and the Irwin Sweeny-Miller Foundation (Columbus).
The Indiana Arts Commission is the primary state organization for promoting study and appreciation for the arts. There are numerous local arts organizations and many county historical societies. The Quilters Hall of Fame is located in Marion.