The Geochemical Society is a nonprofit scientific society founded to encourage the application of chemistry to the solution of geological and cosmological problems.

Membership is international and diverse in background, encompassing such fields as organic geochemistry, high and low-temperature geochemistry, petrology, meteoritics, fluid-rock interaction, and isotope geochemistry. The Geochemical Society is affiliated with the American Association for the Advancement of Science, the International Union of Geological Sciences, the Council of Scientific Society Presidents and is an allied society of the Geological Society of America