| Chair | Bernhard Blümich (DE), term 1: 2005-2009 |
| Vice Chair | Paul Callaghan (NZ), term 1: 2005-2009 |
| Treasurer | Henk van As (NL), term 1: 2005-2009 |
| Secretary General | Joseph Seymour (US), term 1: 2005-2009 |
| Vice Secretary General | Igor Koptyug (RU), term 1: 2005-2009 |
