American Academy of Audiology
The American Academy of Audiology is the world's largest professional organization of, for and by audiologists.
http://www.audiology.org/Pages/default.aspx
American Tinnitus Association
The American Tinnitus Association (ATA) is the national champion of tinnitus awareness, prevention, and treatment. Under its guiding principles - Education, Advocacy, Research, and Support.
http://www.ata.org/
Consumer books we recommend
http://www.hearingproblems.com/
General Hearing
http://www.generalhearing.com/explore.cfm
Self Help for the Hard of Hearing (SHHH)
Self Help for Hard of Hearing People is the nation's largest organization for people with hearing loss. SHHH exists to open the world of communication for people with hearing loss through information, education, advocacy and support.
http://www.shhh.org/
United Hearing Systems
http://www.unitedhearing.com/
Vivatone
http://www.vivatone.com/