| Marjolein Thunnissen, Lund, Sweden | (SIG 1) |
| Nils Trapp, ETHZ, Zurich, Switzerland | (SIG 2) |
| Marc de Boissieu, Grenoble, France | (SIG 3) |
| Alexander Eggeman, Cambridge, UK | (SIG 4) |
| Oleg I. Siidra, St. Petersburg, Russia | (SIG 5) |
| Ullrich Pietsch, Siegen, Germany | (SIG 6) |
| Paola Gilli, Ferrara, Italy | (SIG 7) |
| David Rafaja, Freiberg, Germany | (SIG 8) |
| Martin Lutz, Utrecht, Netherlands | (SIG 9) |
| Karen Friese, Jülich, Germany | (SIG 11) |
| Julien Haines, Montpellier, France | (SIG 12) |
| Marijana Dakovic, Zagreb, Croatia | (SIG 13) |
| Gervais Chapuis, Lausanne, Switzerland | (GIG 2) |
| Radek Kuzel, Prague, Czech Republic | (IUCr Representative) |
| Andreas Roodt, Bloemfontein, South Africa | (ECA) |
| Santiago Garcia-Grande, Oviedo, Spain | (ECM-31 and ECA) |
| Alessia Bacchi, Parma, Italy | (ECA) |
| Udo Heinemann, Berlin, Germany | (ECA) |
| Joke Haidermann, Antwerp, Belgium | (ECA) |