The following are links to geological societies and organizations (all sites open in a new window):

Founded in 1917, the American Association of Petroleum Geologists (AAPG) is currently the world's largest professional geological society. Learn about the Association and its programs, purpose, and services.

The American Geological Institute (AGI) is a nonprofit federation of 35 geoscientific and professional associations that represent more than 100,000 geologists, geophysicists, and other earth scientists. Founded in 1948, AGI provides information services to geoscientists, serves as a voice of shared interests in our profession, plays a major role in strengthening geoscience education, and strives to increase public awareness of the vital role the geosciences play in mankind's use of resources and interaction with the environment.

The American Rock Mechanics Association (ARMA) is your sole direct link in the United States to the professionals, companies, firms, teachers, and students in the field of rock mechanics and rock engineering.

The Association for Women Geoscientists (AWG) is an international organization devoted to enhancing the quality and level of participation of women in the geosciences and to introducing girls and young women to geoscience careers.

The Geological Society of America (GSA) provides access to elements that are essential to the professional growth of earth scientists at all levels of expertise and from all sectors: academic, government, business, and industry.

The Society of Petroleum Engineers (SPE) provides the means to collect, disseminate, and exchange technical information concerning the development of oil and gas resources, subsurface fluid flow, and production of other materials through wellbores for the public benefit; and to provide opportunities through its programs for interested (and qualified) individuals to maintain and upgrade their individual technical competence in these areas.

The US Geological Survey (USGS) serves the Nation by providing reliable scientific information to describe and understand the Earth, minimize loss of life and property from natural disasters, manage water, biological, energy, and mineral resources, and enhance and protect our quality of life.

The Geological Survey of Canada (GSC) is Canada's premier agency for geoscientific information and research, with world-class expertise focusing on geoscience surveys, sustainable development of Canada's resources, environmental protection, and technology innovation.