Aberdeen Formation Evaluation Society
UK; education and knowledge in the scientific and technical aspects of formation evaluation

Alaska Oil and Gas Association
oil and gas industry in Alaska

Alberta Land Surveyors' Association
Alberta Land Surveyors measure and create boundaries for land and determine contours and locations of natural or man-made features;

American Association of Drilling Engineers
providing technical exchange specifically for Drilling Engineers

American Association of Petroleum Geologists
scientific research; science of geology -- particularly as it relates to petroleum, natural gas, other subsurface fluids, and mineral resources; geologists; Geobyte; Explorer online

American Association of Professional Landmen
land professionals; sound stewardship of energy and mineral resources; landman; landmen; scouts

American Association of Stratigraphic Palynologists
promote the science of palynology; "Palynology"; "AASP Newsletter"; "AASP Contributions Series"; Palydisks

American Gas Association
USA; natural gas distribution, transmission, gathering and marketing companies; Current Stats and Studies; Natural Gas News; Analyses, Reports and Statistics

American Geological Institute
federation of 31 geoscience societies

American Geophysical Union
advancing the understanding of Earth and its environment in space; nonprofit federation of 31 geoscientific and professional associations