American Society of Media Photographers

Analog Photography Users Group (APUG.org) - international community of like minded individuals devoted to traditional (non-digital) photographic processes

Association of International Photography Art Dealers (AIPAD)

BAPLA: British Association of Picture Libraries and Agencies

British Press Photographers' Association (BPPA)

Canadian Association for Photographic Art

Canadian Association of Photographers and Illustrators in Communications (CAPIC)

Canadian Centre for Architecture

Center for Creative Photography - University of Arizona - archive, museum, and research center dedicated to photography as an art form and cultural record.

Daguerreian Society - Dedicated to the history, science, and art of the daguerreotype.

Flickr - Photo Sharing

FocalPoint f/8 - A design and production group for the development of photographic, interactive, digital and democratic journalism on the World Wide Web.

HRC Photography - Harry Ransom Humanities Research Center at the University of Texas at Austin

IFPO - International Freelance Photographer's Organization

International Center of Photography - New York

International Federation of Wildlife Photography

Le Mois de la Photo à Montréal

Magnum - a photographic co-operative with editorial offices in New York, London, Paris and Tokyo. Magnum Photos library contains approximately one million photographs in both print and transparency, with 250,000 images available online.

Magyar Fotomuveszek Szovetsege - Association of Hungarian Photographers

National Press Photographers Association

photo.net - online photography community.

Photocritique.net

Photographic Historical Society of Canada

Photographic Society of America

Profotos.com " All Photography. All the Time."

Royal Photographic Society - promoting the art and science of photography

SAIF (Sociétédes Auteurs des arts visuels et de l'Image Fixe)

Tokyo Metropolitan Museum of Photography

WORLD PRESS PHOTO - To promote a free and unrestricted exchange of information and to encourage high professional standards in photojournalism.