EARLINET members are obliged to follow the rules as defined in the EARLINET constitution. This includes (among others) the performance of regular measurements and regular quality assessment. In 2009 the list of members include:
| Principal Investigator | Participating Institution |
| Gelsomina Pappalardo(Project Coordinator) | Consiglio Nazionale delle Ricerche - Istituto di Metodologie per l'Analisi Ambientale, Potenza, Italy |
| Jens Bösenberg(Project Deputy Coordinator) | Max-Planck-Gesellschaft zur Fürderung der Wissenschaften e.V. represented by Max-Planck-Institut für Meteorologie, Hamburg, Germany |
| Dimitris Balis | Aristotle University of Thessaloniki, Thessaloniki, Greece |
| Adolfo Comeron | Universitat Politecnica de Catalunya, Barcelona, Spain |
| Matthias Wiegner | Meteorologisches Institut der Ludwig-Maximilians-Universität, München, Germany |
| Albert Ansmann | Leibniz-Institut für Troposphärenforschung, Leipzig, Germany |
| Arnoud Apituley | National Institute for Public Health and the Environment, Bilthoven, The Netherlands |
| Christine Böckmann | Zentrum für Dynamik komplexer Systeme, Universität Potsdam, Potsdam, Germany |
| Anatoli Chaikovsky | Institute of Physics National Academy of Sciences, Minsk, Bjelarus |
| Georg Hansen | Norwegian Institute for Air Research, Tromsö, Norway |
| Valentin Mitev | Observatory of Neuchatel, Neuchatel, Switzerland |
| Alexandros Papayannis | Ethnikon Metsovion Polytechnion Athinon, Athens, Greece |
| Maria Rita Perrone | University of Lecce, Italy |
| Vincenzo Rizi | Universita degli Studi L´Aquila, Italy |
| Valentin Simeonov | Ecole Polytechnique Federale de Lausanne, Switzerland |
| Aleksander Pietruczuk | Institute of Geophysics, Polish Academy of Sciences, Belsk, Poland |
| Nicola Spinelli | Instituto Nazionale per la Fisica della Materia, Napoli, Italy |
| Dimitar V. Stoyanov | Institute of Electronics, BAS, Sofia, Bulgaria |
| Thomas Trickl | Forschungszentrum Karlsruhe, IMK-IFU, Garmisch-Partenkirchen, Germany |
| Francois Ravetta | nstitute Pierre Simon Laplace, Paris, France |
| Manuel Pujadas | Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Department of Environment Air Pollution Unit, Madrid, Spain |