The Society of Economic Geologists (SEG) is a scientific organization that promotes the study of geology as it relates to mining, mineral exploration, mineral resource classification and mineral extraction.

The society's Publication Board publishes the scientific journal Economic Geology.

The society serves 7,000+ members worldwide who are committed to advancing the science and the discovery of mineral resources through research, publications, courses, and field trips.

SEG began in 1919 with a group of Geological Society of America (GSA) with an interest in economic geology.

December 28, 1920, 60 distinguished professionals met and established the organization.