Which Organizations Are Members of EuroGeoSurveys?

EuroGeoSurveys (EGS) is a not-for-profit organisation whose members are the national Geological Surveys of Europe. According to its homepage, EGS represents 37 member organisations, drawing on 500+ experts and a workforce of 10,000+ across those surveys. In practice, that means membership is institutional rather than individual: you join through your country's geological survey, not as a standalone company or researcher.

What "membership" means at EGS

EGS describes itself as "a not-for-profit organisation representing the Geological Surveys of Europe." Its work is delivered through the collaborative research and activities of Expert Groups and Task Forces, plus the provision of open-access, harmonised geological maps, data, and data infrastructure.

So the membership model has two layers:

• Member organisations — the national Geological Surveys that constitute EGS (37 in total per the homepage).
• Participants — the 500+ experts from those surveys who engage in Expert Groups and Task Forces.

The homepage frames this as a deliberate design choice: "When it comes to European geoscience, only the combined Geological Surveys of Europe have the data, the expertise and the strong collaborative network to achieve this."

The Expert Groups members work through

EGS lists the following Expert Groups on its homepage. These are the working structures through which member-survey experts collaborate:

The homepage presents these as abbreviations without expanding them, so the table above reflects exactly what is published. One group is identifiable from the news section: the GeoEnergy Expert Group, which "contributes to international geothermal dialogue in China."

Who EGS serves (and who it does not)

This distinction matters if you are trying to work with EGS. The organisation states it provides "the European Institutions, regulators, industry, and the public, with expert, balanced and practical pan-European geoscience data and advice to guide policy and to address key societal challenges."

That means:

• If you represent a national Geological Survey in Europe — membership is the relevant route, and your organisation is the unit of participation.
• If you are a researcher, company, regulator, or member of the public — you are a user of EGS outputs (harmonised maps, data, data infrastructure, advice) rather than a member. The homepage describes these outputs as open-access.

How to verify the current member list

The homepage gives the headline figure of 37 member organisations but does not enumerate them in the material available here. To confirm which specific surveys are members today, use the site's own navigation:

1. Go to eurogeosurveys.org.
2. Follow the "More about EGS" link, which the homepage places directly under the "What is EGS?" section.
3. Look for a members or organisation section there — that is where the named list would sit, since the homepage itself only carries the count.

A practical cross-check: because members are national surveys, the member list should broadly track the countries of Europe. If a country's survey is absent from the list, that country is not represented through that body.

What members collectively produce

The homepage summarises the shared output as "harmonised pan-European geoscience data and expertise needed to make sound, EU-level social, environmental and economic decisions for a sustainable future." Two recent news items illustrate the scope:

• A call for "harmonised and interoperable geological knowledge of Europe's marine environment."
• A response to an EU consultation on the future European Critical Raw Materials Centre.

Upcoming events listed include a Workshop: Towards a 3D Geomodel of Europe (12–13 October) and the 7th EAGE GET – Global Energy Transition Conference (2–6 November), alongside the European Civil Protection Forum 2026 and STEP by Pollutec.

Bottom line

EuroGeoSurveys is composed of Europe's national Geological Surveys — 37 member organisations, supported by 500+ experts and a 10,000+ workforce. If your question is "can my organisation join?", the answer depends on whether you are a national geological survey; everyone else engages with EGS as a user of its open-access data, maps, and policy advice. For the named list of the 37, the homepage count is the starting point, and the "More about EGS" page is where to look next.