Conférence Européenne des Postes et Télécommunications, European Conference of Postal and Telecommunications Administrations, coordinating body for European state telecommunications and postal organisations, created in 1959

Organisation européenne de recherches nucleaires (European Nuclear Research Organisation)

Conférence européenne pour les télécommunications par satellites, also European Conference on Satellite Communications (ECSC). Created in 1963, ceased activity in 1970.

Centre national d'etudes spatiales, the French government space agency

Consiglio Nazionale delle Ricerche, Italian National Research Council

Centre national de la recherche scientifique, the French national centre for scientific research

Comisión Nacional de Investigación del Espacio, Spanish National Commission for Space Research, existed from 1963 to 1986.

European Preparatory Commission for Space Research, created to prepare for the establishment of an international organisation to plan and implement common European space programmes. It operated from 1961 to 1964, when ESA’s predecessors, ESRO and ELDO, were created.

Committee on space research which developed from the work of the International Geophysical Year

Centre Spatial Guyanais, Guiana Space Centre, Europe’s Spaceport in French Guiana. The site in Kourou was chosen by the CNES, the French space agency for the creation of a launch pad in 1964