| Ing. Bas Wartenbergh | 5222 AV Den Bosch | Website |
| Ing Joël Wassink | --- | --- |
| Professor Jac Wismans | 5691GJ Son | --- |
| ing. Ewoud Wisse | 2497GB The Hague | Website |
| Thierry Wittezaele | B-9031 Drongen | Website |
| Ing. Joost Wolbers | Enschede | Website |
| Ir Philippe Wuylens | --- | Website |
| Ing. Melanie Zegers | --- | --- |
Every country can set up its own country group. Many countries in and beyond Europe have already done so. Cross-border regional groups are in preparation.