These organizations define their missions as consumer assistance, protection and/or advocacy. The descriptions are based on information they provided.

The type of service provided by each organization varies. Those that assist individuals with problems are specified. The others do not assist consumers with individual complaints, but they may be interested in hearing from consumers about problems, issues and trends in connection with their advocacy and consumer education activities.

Most, though not all, develop and distribute consumer education and information materials; several are professional associations primarily or exclusively concerned with improving consumer protection or customer service; and many are engaged in advocacy of consumer interests before government, the courts and the news media. Where informational or educational materials are offered, there may be a charge; contact the organization to find out.