International Sociological Association  
   Umbrella organization for national associations.
   http://www.ucm.es/info/isa/

International Visual Sociology Association  
   Association for sociologists devoted to the visual study of society, culture, and social relationships.
   http://sjmc.cla.umn.edu/faculty/schwartz/ivsa/

International Association for Social Science Information Service & Technology  
   IASSIST bridges three communities: 1.social scientists who are producers and users of social data; 2.information specialists who preserve social data, manage facilities and provide services that promote the secondary use of social data; and 3.computing sp
   http://www.iassistdata.org/

Association for Research on Nonprofit Organizations and Voluntary Action (ARNOVA)  
   An international membership organization dedicated to fostering through research an understanding of the nonprofit sector, philanthropy and volunteerism.
   http://www.arnova.org

The Society for Applied Sociology  
   Forum for sociologists and others interested in applying sociological knowledge. Includes publications and info on annual meetings, events, and membership.
   http://www.appliedsoc.org/

International Rural Sociology Association  
   Umbrella organization for national associations.
   http://www.irsa-world.org/

International Network for Social Network Analysis  
   Professional association for researchers interested in social network analysis
   http://www.insna.org/