REALTOR® is a registered trademark, as the ® symbol indicates. Only members of the NAR — National Association of Realtors — are allowed to use the trademark as part of their professional title. Members have access to educational resources and certifications around the complex real-estate process. They are also required to adhere to a Code of Ethics.
According to NAR, their aim is to be experts in real estate, trends, and their local community, in order to help both buyers and sellers succeed.
Roughly half of the people who can sell real estate (by getting a state license) take the additional steps to join NAR and become a REALTOR®.
You can find licensed a REALTOR® by searching the NAR directory, or browsing regional resources.