Below is a list of the 22 national statistical institutes and statistical authorities participating in ESSnet Big Data, in alphabetical order of country code; overall coordination resides with Statistics Netherlands (CBS). See here for detailed contact information of project participants.
| Country code | Country | Organisation (Abbreviation) | Type of organisation | Project status |
| AT | Austria | Statistik Austria | National statistical institute | Co-partner |
| BE | Belgium | Statistics Belgium | National statistical institute | Co-partner |
| BG | Bulgaria | National Statistical Institute (NSI) | National statistical institute | Co-partner |
| DE | Germany | Statistisches Bundesamt (Destatis) | National statistical institute | Co-partner |
| DK | Denmark | Statistics Denmark (DST) | National statistical institute | Co-partner |
| EE | Estonia | Statistics Estonia | National statistical institute | Co-partner |
| EL | Greece | Hellenic Statistical Authority (ELSTAT) | National statistical institute | Co-partner |
| ES | Spain | Instituto Nacional de Estadistica (INE-ES) | National statistical institute | Co-partner |
| FI | Finland | Statistics Finland | National statistical institute | Co-partner |
| FR | France | Institut National de la Statistique et des Etudes Economiques (INSEE) | National statistical institute | Co-partner |
| FR | France | Ministry of Labour (DARES) | Statistical authority | Co-partner |
| FR | France | Ministry of Energy (SOES) | Statistical authority | Co-partner |
| IE | Ireland | Central Statistical Office (CSO) | National statistical institute | Co-partner |
| IT | Italy | National Institute of Statistics (ISTAT) | National statistical institute | Co-partner |
| NL | Netherlands | Statistics Netherlands (CBS) | National statistical institute | Coordinator |
| NO | Norway | Statistics Norway (SSB) | National statistical institute | Co-partner |
| PL | Poland | Central Statistical Office (GUS) | National statistical institute | Co-partner |
| PT | Portugal | Instituto Nacional De Estatistica (INE-PT) | National statistical institute | Co-partner |
| RO | Romania | National Institute of Statistics (INS) | National statistical institute | Co-partner |
| SE | Sweden | Statistics Sweden (SCB) | National statistical institute | Co-partner |
| SI | Slovenia | Statistical Office of the Republic of Slovenia (SURS) | National statistical institute | Co-partner |
| UK | United Kingdom | Office for National Statistics (ONS) | National statistical institute | Co-partner |
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