 American Mathematical Society
http://www.ams.org/
Founded to promote mathematical research and education through conferences, contests surveys, publications, employment services, scholarship programs, locating research funding, resources, and outreach. Includes program news and membership information.
 London Mathematical Society (LMS)
http://www.lms.ac.uk/
Established in 1865 for the promotion and extension of mathematical knowledge. To this end the Society undertakes various publications and holds regular meetings, conferences and symposia. In spite of its name, the Society is not simply a London society. It is the major British learned society for Mathematics, with a nationwide membership. It also has several hundred overseas members.
 European Mathematical Society (EMS)
http://www.emis.de/
Aims to further the development of all aspects of mathematics in the countries of Europe and establish a sense of identity amongst European mathematicians. Includes electronic library, databases and details of activities.
 Irish Mathematical Society
http://www.maths.tcd.ie/pub/ims/
Aims to further mathematics and mathematical research in Ireland. Its membership is international, but it mainly represents mathematicians in universities and other third level institutes in Ireland. Bulletins, meetings, membership information, group rules and structure, employment opportunities, membersonly area, and links to useful resources.
 The OpenMath Society
http://www.openmath.org/omsoc/index.html
An emerging standard for representing mathematical objects with their semantics, allowing them to be exchanged between computer programs, stored in databases, or published on the web. Site has details of membership, meetings and standards.
 Edinburgh Mathematical Society (EMS)
http://www.maths.ed.ac.uk/~ems/
Founded in 1883 for "the mutual improvement of its members in the Mathematical Sciences, pure and applied", it is the principal mathematical society for the university community in Scotland. Membership is drawn from all the Scottish universities and other educational institutions as well as from mathematicians in industry and commerce both at home and overseas.
