American Academy of Asthma, Allergy, and Immunology 
Has a wide variety of information on these disorders. You can search the site in several areas.
http://www.aaaai.org/European Federation of Asthma and Allergy Associations 
An alliance of 27 organizations in 14 different countries across Europe. Information on aspects of asthma and allergy.
http://www.efanet.org/
Long Island Allergy and Asthma Society Online 
Includes a searchable listing of allergists on Long Island, answers to frequently asked questions, and other related information.
http://www.liaas.org
Florida Allergy, Asthma and Immunology Society (FAAIS) 
Details about this organization which promotes high quality care, education of medical professionals and the public as well as representation of its members. Includes a newsletter, links and patient information.
http://www.faais.org
Allergy Society of South Africa : ALLSA 
Information for medical health care professionals, allergic patients, and the public at large.
http://www.allergysa.org/
World Allergy Organization 
Global Allergy Information Network (GAIN) is the leading source of allergy information worldwide for medical professionals and consumers.
http://www.worldallergy.org
Hispanic American Allergy & Immunology Association 
A bilingual (English and Spanish) educational source for patients and physicians on allergy, asthma and immunology.
http://www.haama.org
Calgary Allergy Network 
Provides practical information and resources for those dealing with asthma as well as this disorder.
http://www.calgaryallergy.ca/
MedBioWorld's Associations 
Direct links to allergy medicine and allergology organizations and databases.
http://www.medbioworld.com/cgi-bin/displaycontents.cgi?table=med&type=Associations&filecode=(M)%20Allergy
Don't Go Nuts Incorporated 
Non-profit organization whose goal is to educate restaurants and caterers about patrons with food allergies, sensitivies, and restrictions.
http://www.dontgonuts.org
Allergy New Zealand 
Provides support, information, and advocacy for people living with allergies, asthma, and related conditions.
http://www.allergy.org.nz/
Australasian Society of Clinical Immunology and Allergy 
ASCIA is a professional body of allergists and clinical immunologists in Australia and New Zealand. Aims to advance the science and practice of clinical immunology and allergy, by promoting education and the highest standard of ethical medical practice. Find details about the organization, and a calendar.
http://www.allergy.org.au
Global Allergy and Asthma European Network (GA²LEN) 
A consortium of European research centers specialized in allergic diseases, including asthma. Includes informational resources, details of training, events listing, press releases, and links.
http://www.ga2len.net/
Asthma and Allergy Foundation of America, Texas Chapter 
Helps sufferers to successfully manage and control their diseases through education, information, training and referrals. Includes disease information, a newsletter and resources.
http://aafatexas.org/