American Marketing Association - Markets and advertises articles and tips, thousands of companies and firms, careers and jobs, and more.
http://www.marketingpower.com/ more info...
Canadian Marketing Association - Markets association in Canada representing the integration and convergence of all marketing disciplines.
http://www.the-cma.org/ more info...
Marketing Research Association - Promotes excellence in the opinion and marketing research industry by providing members with a variety of opportunities.
http://www.mra-net.org/ more info...
Search Engine Marketing Organization - A non-profit professional association working worldwide to increase awareness and promote the value of search engine marketing.
http://www.sempo.org/ more info...
SEOptimise - A new trade association designed to promote search engine marketing in the UK.
http://www.seoptimise.com/ more info...
The IMRO - Dedicated to providing an open forum for the discussion of best practices and ethical approaches to research.
http://www.imro.org/ more info...