The Illuminating Engineering Society of North America:
www.iesna.org
IESNA San Diego Section:

www.iessd.org

IESNA New England Section:

www.iesnewengland.com
International Association of Lighting Designers:

www.iald.org
Designers Lighting Forum Los Angeles:

www.dlfla.org

Designers Lighting Forum New York:

www.dlfny.org

Lighting Detectives New York:

www.lightingdetectives.org

www.darksky.org
Light Pollution Abatement Program Canada:

www.rasc.ca/light
The British Astronomical Association's Campaign for Dark Skies:

www.britastro.org/dark-skies/index.html
International Commission on Illumination:

www.cie.co.at
National Council on Qualifications for the Lighting Professions:

www.ncqlp.org
U.S. Green Building Council LEED:

www.aia.org
American Society of Landscape Architects:

www.asla.org
American Society of Interior Designers Commercial and Home Interior Design:
www.asid.org