- International Plein Air Painters
 - Advances the execution and enjoyment of plein air painting without the restrictions and limitations of borders or regions. - Laguna Plein Air Painters Association (LPAPA)
- Links the strong plein air movement of the early California painters to the present ones.
- Mid-Atlantic Plein Air Painters Association (MAPAPA)
- Promotes an appreciation of, and participation in, the art of outdoor painting.
- Plein Air Florida
- Network of Florida artists who paint on location and participate in events, workshops, exhibits, and more.
- Plein-Air Painters of America
- Featuring a group of on-location painters recognized for their exhibitions and workshops.
- Southern California Plein-Air Painters Association
- Meets weekly for painting landscapes in and around Orange County.
- Tucson Plein Air Painters' Society
- Documents the contemporary history of Tucson, its magnificent ranches, missions, historical sites, and unspoiled wilderness.
- Washington Society of Landscape Painters
- Featuring plein air works, artist bios, history, bulletin boards, activities, and more.
|