- M. Nespolo (Chair, France)
- M.I. Aroyo (Spain)
- R.P. Felix (The Philippines)
- S. Hyde (Australia)
- K. Ohsumi (Japan)
- D.M. Proserpio (Italy)
- E.E. Rams (Cuba)
- B. Souvignier (The Netherlands)
- H. Sowa (Germany)
- K. Stroz (Poland)
- V.E. Dmitrienko (Russia)
- J.-G. Eon (Brazil)
- E. Koch (Germany)
- D.B. Litvin (USA)
- G. McColm (USA)
- T. Matsumoto (Japan)
- D. Pandey (India)
Terms of referenceApproved by action of the IUCr General Assembly, 25 August 2005
- To strengthen links and interactions among crystallographers, mathematicians and theoretical physicists and chemists, and to promote a common language in these fields.
- To promote the presence at IUCr meetings of scientists working in the fields of mathematics, geometry, topology, and symmetry.
- To strengthen the recognition of crystallography as an interdisciplinary science in those fields where nowadays it is considered only to be a technique.
- To promote the publication of mathematical and theoretical papers in the journals of the IUCr.
- To encourage the development and dissemination of mathematical and theoretical methods, software and databases for the solution of crystallographic problems.
- To promote and organize symposia of interest to mathematical and theoretical crystallographers during IUCr Congresses and meetings of Regional Associates, in cooperation with other Commissions of the Union.
- To promote and organize meetings, workshops and schools in collaboration with other Commissions particularly targeting post-graduate students and young scientists needing and willing to complete their education in crystallography.