» American Association for Crystal Growth (AACG)    Includes information on conferences, membership information, and a list of positions vacant in this field.    http://www.crystalgrowth.org/index.php

» American Crystallographic Association (ACA)    Includes a newsletter, information on annual conferences, information on careers and positions available, and related links.    http://aca.hwi.buffalo.edu//

» British Crystallographic Association (BCA)    Includes information about the activities of its groups, conference information, index and introduction to its newsletter, and related links.    http://img.cryst.bbk.ac.uk/BCA/

» Czech and Slovak Crystallographic Association (CSCA)    Association bulletin, information on seminars and conferences, and crystallography resources.    http://www.xray.cz/xray/cryst.htm

» European Crystallographic Association (ECA)    Includes minutes and reports of its executive council and groups, conference information, related news and lists of officials and rules, as well as membership information.    http://www.ecanews.org/

» IUCr Commission on Inorganic and Mineral Structures    Reaserch themes, members, info about meetings.    http://www.lcm3b.uhp-nancy.fr/cims/

» IUCr Commission on Mathematical and Theoretical Crystallography    Reaserch themes, members, info about meetings.    http://www.lcm3b.uhp-nancy.fr/mathcryst/

» International Union of Crystallography (IUCr)    Serves the world community of crystallographers.    http://www.iucr.org/

» Society of Crystallographers in Australia and New Zealand (SCANZ)    Includes lists of officials, conference information, membership information, newsletters, and links to educational resources.    http://www.sca.asn.au/

» Special Interest Group on Aperiodic Crystals    Modulated structures and quasicrystals    http://www-xray.fzu.cz/sgip/aphome.html

» Special Interest Group on Mineralogical Crystallography    Special Interest Group No. 5 of the European Crystallographic Association.    http://www.lcm3b.uhp-nancy.fr/ecasig5/

» Swiss Society for Crystallography    Membership and meetings information. Site in English, French and German.    http://www.sgk-sscr.ch/

» The Crystallographic Society of Japan (CrSJ)    Details about the society, including news and annual meetings.    http://www.crsj.jp/

» The Egyptian Society of Crystallography and Applications    ESCA follows scientific progress in crystallography and related activities.    http://www.geocities.com/egyptiansca/

» The Pittsburgh Diffraction Society    News and information on conferences.    http://www.pittdifsoc.org