Human Factors and Ergonomics Society
http://hfes.org
International Ergonomics Association
http://iea.cc
Chartered Institute of Ergonomics and Human Factors
http://www.ergonomics.org.uk
Association for Computing Machinery SIGCHI
http://www.acm.org/sigchi
User Experience Professionals Association (UXPA) International
https://uxpa.org
Industrial Designers Society of America
http://www.idsa.org
American Institute of Graphic Arts
http://www.aiga.org
Ergoweb
http://www.ergoweb.com
Bad Human Factors Designs
http://www.baddesigns.com
Usable Web (links on web usability)
http://usableweb.com
HCI Bibliography
http://www.hcibib.org
FAA Human Factors Division
http://www.hf.faa.gov/