The National Association of Realtors (NAR), whose members are known as Realtors (rē(ə)ltər; -ˌtôr), is North America's largest trade association representing over 1.2 million members (as reported February 2008), including NAR's institutes, societies, and councils, involved in all aspects of the residential and commercial real estate industries. NAR also functions as a Self Regulatory Organization for real estate brokerage