Australian Map Circle
   The Australian Map Circle (AMC) is a national group of map producers, users and curators, which acts as a medium of communication for all those interested in maps.
   http://australianmapcircle.org.au/

International Cartographic Association
   Promotes the discipline and profession of cartography in an international context.
   http://www.icaci.org/

International Map Trade Association (IMTA)
   IMTA members are the companies that create and sell the maps, atlases and map-related products you use. Find information on maps, geography and mapping technology.
   http://www.maptrade.org/

MapHist Discussion Group
   MapHist, the Map History Discussion List, is an e-mail discussion group whose primary focus is historical maps, atlases, globes and other cartographic documents.
   http://www.maphist.nl/

Mt. Diablo Surveyors Historical Society
   Society of Land Surveyors interested in tne history of Mount Diablo, Northern California, and the establishment of the Mt. Diablo meridian and initial point.
   http://www.mdshs.org/

North American Cartographic Information Society
   NACIS is a professional society dedicated to the advancement and cooperation of all cartographic disciplines. Members include practicing cartographers, educators, map librarians, and map collectors.
   http://www.nacis.org/

Ordnance Survey Britain's National Mapping Agency
   Maps and mapping for Great Britain, with free mapping and services together with information on digital and paper mapping products and other aspects of cartography
   http://www.ordnancesurvey.com

Ordnance Survey Ireland
   The Irish national mapping agency.
   http://www.osi.ie/

Society of Cartographers
   Society founded in 1964 aiming to support the practising cartographer and encourage and maintain a high standard of cartographic illustration.
   http://www.soc.org.uk/

The British Cartographic Society
   an association of individuals and organisations dedicated to exploring and developing the world of maps
   http://www.cartography.org.uk/

Washington Map Society
   An informal organization of people interested in cartography, cartographic history, and collecting maps, both old and new.
   http://www.washmap.org/