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Welcome to the International Union of Crystallography

Advancing structural science globally.

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Publications Open-access, peer-reviewed, society-led

Commissions Make up the scientific heart of the Union 

CIF IUCr standard framework

Governance General Assembly, Executive Committee and Finance Committee

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What we do

Growing crystallography around the world through education & capacity-building.

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Congress

The most important international conference for structural scientists. 

https://www.iucr.org/who-we-are/people/wdc

World Directory

World Directory of Crystallographers and of Other Scientists Employing Crystallographic Methods.

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CGC-2026 entry

IUCr Crystal Growing Competition 2026

Grow crystals. Share what you discover.

Open to school students worldwide. Entries close 30 November 2026.

Newsletter 2026 · Volume 34 · Number 5Archive · Editorial Board

/ Commentary

The measurement method matters

/ Meeting Report (IUCr supported)

Voices of the Next Generation: Reflections from the LACA–ABCr–Joint Meeting 2025

/ Meeting Report

6th National Crystallography Meeting successfully held in Giresun, Türkiye

History & Culture / Feature article

Linus Pauling, Robert Corey, Richard Marsh, and other Caltech Crystallographers: a 1999 Conversation with Richard E. Marsh

Thanks to our partners

Announcements

Geographical distribution of published papers in the IUCr Journals, 2016 to 2025.
Announcement

IUCr marks International Open Access Week 2026

International Open Access Week takes place from 19–25 October 2026 under this year’s theme, “The Cost of Knowledge”. The theme asks the research community to consider what is required to create, share and sustain reliable scientific knowledge.

19 Oct 2026
Announcement

IUCr-Wiley Publishing Partnership Announcement

The International Union of Crystallography (IUCr) is expanding its publishing partnership with Wiley to support the long-term future of the IUCr journals.

7 Oct 2026
Electric Voice Theatre, UC8 and the Clerkenwell Community Choir
Announcement

The Peaceful Crystallographer - and Other Songs

Join Electric Voice Theatre at Conway Hall for a singing celebration of Kathleen Lonsdale – the first female professor at UCL and one of the first female Royal Society Fellows. Defying all odds, her pioneering science led to breakthroughs in organic chemistry and medical treatments.

9 Sep 2026
portraits of the laureates
Announcement

Cockroach milk crystals reveal an unusual solution to protein crystallization

2026 Ig Nobel Prize-winning researchers Ramaswamy Subramanian, Leonard Chavas and Nathan Coussens were among the authors of a remarkable study that revealed how naturally formed protein crystals in the viviparous cockroach Diploptera punctata challenge conventional ideas about protein crystallization.

3 Sep 2026

Meetings & Webinars

08

Nov

Harwell, United Kingdom

CCP-EM/Diamond Icknield Workshop

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08

Nov

Heidelberg, Germany

Instruct-ERIC hands-on workshop on Advanced cryo-FIB-SEM methods

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09

Nov

Didcot, United Kingdom

The Winter Crystallography Meeting

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10

Nov

Didcot, United Kingdom

HRPD Upgrade and Future Vision Workshop

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all events
IUCr Congress and General Assembly
Berlin, Germany
18-25 August 2029
Berlin skyline
/events/2029/august/twenty-eighth-congress-and-general-assembly-of-internationa…
Regional Associate Meetings
ECM-36
Prague
23–28 August 2027
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/events/2027/august/ecm-36
76th Annual Meeting of the ACA: The Structural Science Society
San Jose, CA
3–7 Aug 2027
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/events/2027/august/76th-annual-meeting-of-aca-structural-science-society
AsCA 2027
Bangkok
29 Nov – 3 Dec 2027
asca logo
/events/2027/november/asca-2027
LACA VII
San Martín, Buenos Aires Province
6–8 Oct 2027
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/events/2027/october/laca-viii
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