Geological Survey of Denmark and Greenland

The Geological Survey of Denmark and Greenland (Danish: Danmarks og Grønlands Geologiske Undersøgelse, GEUS) is the independent sector research institute under the Danish Ministry of Climate and Energy. Headquartered in Copenhagen, Denmark, GEUS also maintains field offices in Nuuk, Greenland. GEUS is an advisory, research and survey institute in hydrogeology, geophysics, geochemistry, stratigraphy, glaciology, , marine geology, mineralogy, climatology, environmental history, air photo , geothermal energy fields concerning Denmark and Greenland.

GEUS works in close corporation with and Geologisk Museum, both part of University of Copenhagen.

It publishes a service paper called Greenland Hydrocarbon Exploration Information Service (GHEXIS) and a newsletter called Greenland Mineral Exploration Newsletter (MINEX) in co-operation with the (Råstofdirektoratet), a secretariat for the Joint Committee on Mineral Resources under Greenland's home rule.