Welcome to the
International Union of Crystallography

The IUCr is an International Scientific Union. Its objectives are to promote international cooperation in crystallography and to contribute to all aspects of crystallography, to promote international publication of crystallographic research, to facilitate standardization of methods, units, nomenclatures and symbols, and to form a focus for the relations of crystallography to other sciences. Read more »


  • Crystallographers unite to tackle coronavirus

    With stories about coronavirus dominating the news, we report that crystallographers around the world are making strong contributions to the efforts to find a vaccine and advance therapeutics.

  • John D. Westbrook (1957–2021)

    We regret to announce the death of John Westbrook, Data & Software Architect Lead at Research Collaboratory for Structural Bioinformatics Protein Data Bank (RCSB PDB), Piscataway, NJ, USA, and member of several IUCr Committees/Commissions.

  • Jack D. Dunitz (1923–2021)

    We are sad to report the death of Jack Dunitz, Professor Emeritus at ETH-​Zürich, Switzerland, at the age of 98. Professor Dunitz was widely valued as an insightful scientist, an inspirational teacher and a witty raconteur, who shaped the development of modern crystallography over more than 70 years.

  • Acta B introduces crystal growth section

    Acta Cryst. B has launched a new section on the growth of crystals of non-biological “small” molecules and those of extended organic, inorganic or hybrid materials, and actively welcomes submissions that match the scope of the journal.

  • Final election results are in – new IUCr Executive Committee now complete

    Dr Angela Altomare (Institute of Crystallography – CNR, Bari, Italy) and Dr Manfred Weiss (Helmholtz-Zentrum Berlin, Germany) have been elected as ordinary members of the IUCr Executive Committee.

The best in crystallographic research

Uniquely among International Scientific Unions, the IUCr publishes its own primary research journals. Acta Crystallographica Sections A–F, IUCrJ, Journal of Applied CrystallographyJournal of Synchrotron Radiation and IUCrData communicate the highest quality peer-reviewed research findings across the many scientific areas to which crystallography is relevant.

Meetings and webinars

[Melbourne 2023 logo]

26th IUCr Congress

Melbourne, Australia
22-29 August 2023

Regional Associate meetings
[ACA logo]
Portland, OR, USA
29 July-3 August 2022

[AsCA logo]
Jeju, Republic of Korea
30 October-2 November 2022

[ECA logo]
ECM33 Versailles, France
23-27 August 2022

to be announced

IUCr Corporate Associates

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