National Association of Realtors (Chicago) : The largest trade association for the real estate industry in the United States

The National Association of Realtors was founded on May 13, 1908 as the National Association of Real Estate Exchanges in Chicago, Illinois. In 1916, the National Association of Real Estate Exchanges changed its name to The National Association of Real Estate Boards. The current name was adopted in 1972.

In 1949, the National Association of Real Estate Boards obtained U.S. registration no. 515,200 for "realtors" as a collective trademark for real estate brokerage services. In 1950, it obtained a second registration, registration no. 519,789, for "realtor", in the same field. NAR has since obtained registrations for the term in such fields as electronic lock-boxes, clothing, and jewelry.

NAR's members are residential and commercial real estate brokers, real estate salespeople, immovable property managers, appraisers, counselors, and others engaged in all aspects of the real estate (immovable property) industry, where a state license to practice is required.

Members belong to one or more of some 1,600 local realtor boards or associations. They are pledged to a code of ethics and standards of practice, which were adopted in 1913. The National Association of Realtors is also a member of The Real Estate Roundtable, a lobbying group in Washington, D.C.

According to en.wikipedia