Aberdeen Geological Society
   Informal group with organises a series of lectures aimed at amateur and professional geologists. Also information about field trips and geological field guides.
   http://www.abdn.ac.uk/geology/ags/ags.htm

Alabama Geological Society
   Promotes geology as a profession and as a science; offers scholarships, professional workshops, and field trips.
   http://homepage.mac.com/jpashin/AGS.htm

American Geological Institute (AGI)
   A nonprofit federation of 32 geoscientific and professional associations that represent geologists, geophysicists, and other earth scientists. Information services to geoscientists, geoscience education, and strives to increase public awareness of the rol
   http://www.agiweb.org/

American Institute of Professional Geologists in Texas (AIPG-TX)
   Texas section of the American Institute of Professional Geologists (AIPG). Representing geologists in Texas, U.S., and overseas.
   http://www.aipg-tx.org

Association of Engineering Geologists, Texas - (AEG-TX)
   International, non-profit, scientific and technical association. 3,000 members with specialisms in most fields of geology.
   http://www.aeg-tx.org/index.asp

BCGS Black Country Geological Scociety
   Society meets on a regular basis in Dudley UK, for local geology and lectures.
   http://www.bcgs.info

Buffalo Association of Professional Geologists, Inc.
   The BAPG was promotes the geological sciences in Western New York.
   http://www.bapg.org/

CHRONOS
   A GeoInformatics project involving individuals, groups, and organizations to create a dynamic framework for Earth history research.
   http://www.chronos.org/index.html

Calgary Mineral Exploration Group Society
   The Society endeavours to promote public understanding of the Earth Sciences and the business interests of its members; Alberta, Canada.
   http://www.meg.calgary.ab.ca/

Craven & Pendle Geological Society
   An amateur society based in north west England. Particularly concerned with Carboniferous geology and the Crinoidea.
   http://www.kabrna.com/cpgs/

East Tennessee Geological Society
   Society for amateur and professional geologists interested in the geology of Tennessee
   http://www.discoveret.org/etgs/

East Texas Geological Society
   Society for the education and networking of Oil/Gas Professionals and Geologists and Geophysicists.
   http://www.easttexasgeo.com/

Essex Rock and Mineral Society
   Amateur geological society with field trip reports, lecture programme, events calendar and articles.
   http://www.erms.org/

Geological Association of Canada
   A national geoscience society, publisher and distributor of quality geoscience publications and journals, including Geoscience Canada, GEOLOG, Geotext, and Palaeontographica Canadiana.
   http://www.esd.mun.ca/~gac/

Geological Society of Malaysia
   Promotes the advancement of earth sciences in Malaysia and South East Asia.
   http://www.gsm.org.my/

Geological Society of Nevada, Southern Chapter
   Organization based in Las Vegas which holds monthly seminars in geology. Annual field trip to sites of geologic interest.
   http://www.unlv.edu/Colleges/Sciences/Geoscience/GSN/gsnsc.htm

Hull Geological Society
   UK society which publishes "Humberside Geologist." Site includes membership information and schedule of events.
   http://www.hullgeolsoc.org.uk/

International Association for Mathematical Geology (IAMG)
   To promote international cooperation in the application and use of mathematics in geological research and technology.
   http://www.iamg.org/

International Association for Obsidian Studies
   Information on the major interest areas of the IAOS including obsidian hydration dating, obsidian characterization ("sourcing"), geoarchaeological obsidian studies, obsidian and lithic technology and the prehistoric procurement and utilization o
   http://www.peak.org/obsidian/obsidian.html

International Union of Geological Sciences (IUGS)
   Non-governmental scientific organization which promotes and supports the study of geological problems of world-wide significance, and facilitates international and interdisciplinary cooperation in the earth sciences.
   http://www.iugs.org/

International Work Group on Geospatial Analysis of Glaciated Environments
   Focusing on investigations of modern and ancient glaciated environments by utilizing geographic information systems (GIS) techniques.
   http://www.emporia.edu/earthsci/gage/gage.htm

Irish Association of Economic Geology (IAEG)
   Professional association for geoscientists in Ireland. Includes membership information, position openings, events announcements, and publications.
   http://www.iaeg.org/

NAGT
   National Association of Geology Teachers
   http://www.nagt.org/

Northwest Geological Society (NWGS)
   A regional geological association based in Seattle, Washington.
   http://www.scn.org/tech/nwgs/

Society for Organic Petrology
   For scientists and engineers involved with coal petrology, kerogen petrology, organic geochemistry and related disciplines.
   http://www.tsop.org/index.html

Society of Petroleum Engineers
   Extensive network of international petroleum engineers.
   http://www.spe.org/

The Geological Society of America
   Advancing the geosciences, enhancing the professional growth of its members, and promoting the geosciences in the service of humankind.
   http://www.geosociety.org/

Tooele Gem and Mineral Society
   Dedicated to promote and educate amateur enthusiasts of gems, minerals, fossils and lapidary.
   http://www.utahrockhounds.com/tooelegem/

Yorkshire Geological Society
   Scientific organization with an interest in all aspects of geology, principally in Northern England and adjacent areas.
   http://earth.leeds.ac.uk/ygs/index.htm