- CEOS is an independent international intergovernmental structure that ensures the international coordination of civil Earth observation programmes from space and promotes the exchange of data in order to maximise the benefits to society.
- COPUOS is tasked with reviewing international cooperation in peaceful uses of outer space, studying space-related activities, encouraging space research programmes, and studying legal problems arising from the exploration of outer space.
- The European Centre for Medium-Range Weather Forecasts (ECMWF) is both a research institute and an operational service producing and disseminating numerical weather predictions to its Member States. ECMWF is an independent intergovernmental organisation with 34 Member States.
- ESO, the European Southern Observatory, plays a leading role in Europe in promoting and organising cooperation in astronomical research.
- EUMETSAT is an intergovernmental organisation founded in 1986. Its purpose is to supply weather and climate-related satellite data, images and products to the national Meteorological Services of its Member and Cooperating States in Europe, and other users worldwide.