| Ing. Antony Baan Hofman | 4622AH Bergen op Zoom | Website |
| Willem Baan Hofman | 4630AB Hoogerheide | Website |
| Ir. Marjolein Baart | --- | Website |
| Rudi Beijaard | --- | --- |
| Lisa Beld | --- | --- |
| Wim Berends | 3972 LB Driebergen | --- |
| Dr. Ir. Ellen Marian Berends | Den Haag | Website |
| Ing. Nico Bosscha | 2740 AH Waddinxveen | Website |
| Hans Bot | --- | --- |
| Ir. Dirk Christiaens | 8500 Kortrijk | Website |
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.