TREF Composition as from January 2019
| Chair | Prof. Barbro Åsman |
| Austria | Mr Robert Müller |
| Belgium | Prof. Dirk Ryckbosch |
| Bulgaria | Ms Zornica Todorova |
| Czech Republic | Mr Petr Martinek |
| Denmark | Ms Katinka Stenbjørn |
| Finland | Mr Juha Latikka |
| France | Mr Eric Bernet / Mr Damien Brintet |
| Germany | Mr Christoph Fritz |
| Greece | Prof. Konstantinos Fountas |
| Hungary | Ms Györgyi Juhász Kolossvárynéy |
| Israel | Mr Eitan Kuperstoch |
| Italy | Prof. Umberto Dosselli |
| Netherlands | Dr J.T.M. Rokx a.i. |
| Norway | Prof. Eivind Osnes |
| Poland | Mr Dariusz Drewniak |
| Portugal | Ms Ana Luisa Nunes Barata |
| Romania | Ms C. Melinte |
| Serbia | Mr Danko Jovanović |
| Slovak Republic | Mr Fedor Rosocha |
| Spain | Mr Luis Diez Mateo |
| Sweden | Mr Mathias Hamberg |
| Switzerland | Mr Samir Yeddes |
| United-Kingdom | Ms Sarah Verth (Vice-Chair) |
| CERN Management | Mr James Purvis Dr Paul Collier Dr Martin Steinacher |
| Staff Association | Dr Ghislain Roy Ms Isabelle Mardirossian |
| Ex-Officio Members | Dr Fabiola Gianotti, Director-General Dr Ursula Bassler, President of Council Mr Ossi Malmberg, FC Chair |
| Secretary | Mr Jean-Marc Saint-Viteux |