American Association for Nude Recreation

(From its website)

AANR Mission:

AANR exists to protect, promote, provide and preserve nude recreation by:

• Protecting nudists and naturists from policies at the local, state and federal levels that interfere with the right to enjoy clothing-free recreation in appropriate settings;
• Promoting nude recreation by educating government leaders, employers and the public;
• Providing support services and community to our members;
• Preserving the financial viability, integrity and strength of the AANR organization.

The American Association for Nude Recreation is the largest, most long-established organization of its kind in North America. With roots dating to 1931, we have grown from our humble beginnings to an organization that has served over 213,000 individuals throughout the United States, Canada, Mexico and beyond. These members enjoy their own backyards and pools with family and friends, as well as over 180 nudist resorts and affiliates.