American Crystallographic Association - Includes a newsletter, information on annual conferences, information on careers and positions available, and related links.
British Crystallographic Association - Includes information about the activities of its groups, conference information, index and introduction to its newsletter, and related links.
European Crystallographic Association - 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
Society of Crystallographers in Australia - Includes lists of officials, conference information, membership information, newsletters, and links to educational resources.