World Iris Association  
   Devoted to information on older iris cultivars, sources for these iris, pictures, pedigrees, and bibliographies.
   http://www.worldiris.com/

The Historic Iris Preservation Society  
   Offers information including ancestries, popularity listings, display gardens, and extensive cultivar identification photographs.
   http://www.worldiris.com/public_html/level1/TOC.html

American Iris Society  
   Promotes the culture and improvement of the Iris. Includes events, regional chapters, classification, cultivar registration and photographs.
   http://www.irises.org/

Capital Hudson Iris Society  
   Contains photographs, news, schedule and membership information.
   http://www.chis-online.org/

Iris Garden  
   Region 1 of the American Iris Society comprised of Connecticut, Maine, Massachusetts and Western New England. Content features local chapter events, culture tips, and classification guide.
   http://www.irisgarden.org

Sun Country Iris Society  
   Includes contact information, membership fees and meeting details.
   http://ag.arizona.edu/maricopa/garden/html/clubs/iris.htm

San Diego Iris Society  
   Offers membership and contact information.
   http://www.geocities.com/RainForest/7679/societyindex.html

Greater Rochester Iris Society  
   Upstate NY group provides event and membership details.
   http://www.rochestergardening.com/local/gris.html

King County Iris Society  
   Encompassing the greater Seattle, Washington area. Presents culture, educational articles and program schedule.
   http://www.kcis.org/

Sooner State Iris Society  
   Photographs, calendar of events and news from this Oklahoma City, Oklahoma group of plant enthusiasts.
   http://home.flash.net/~mindpath/ssis/index.htm

Fort Worth Iris Society  
   Founded in 1959 to promote interest in the culture of the genus. Contents include glossary, events and member favorites.
   http://www.fortworthiris.org/

Texoma Rainbow Iris Society  
   Contents include meeting schedule and newsletter.
   http://www.triris.org/

Tall Bearded Iris Society  
   Features membership information, photographs and listing of display gardens.
   http://web2.airmail.net/a0006613/tbis/

Species Iris Group of North America  
   Dedicated to the study of the wild species of the genus Iris. Presents photographs, seed exchange, and culture information.
   http://www.signa.org/

Eastern North Carolina Iris Society  
   Content includes event schedule and photographs.
   http://thegardensite.com/irises/encis/index.htm

Tucson Area Iris Society  
   Presents local hybridizers and culture information, photographs, and event schedule.
   http://www.tucsoniris.org/

The Tulsa Area Iris Society  
   Features event and program schedule, photographs and culture.
   http://www.tulsairis.org/

San Fernando Valley Iris Society  
   Features photographs, culture tips and schedule.
   http://www.geocities.com/sfvis/

Canadian Iris Society  
   Provides regional events, culture, news, editorials and photographs.
   http://members.rogers.com/cdn-iris/

Louisville Area Iris Society  
   Displays culture information, photographs, meetings and activities schedule.
   http://www.lais-ky.org/

Median Iris Society  
   Devoted to promoting interest in and the development of median irises. Content includes display gardens, glosary, officers and yearly awards.
   http://www.medianiris.com/

The Society for Siberian Irises  
   Presents awards, photographs and display garden locations.
   http://www.socsib.org/

East Tennessee Iris Society  
   Provides photographs, show and meeting schedule, and contacts.
   http://www.korrnet.org/etis/

Hudson Valley Iris and Daylily Society  
   Content includes schedule, club charter and show information.
   http://www.hvids.org/

Aril Society International  
   Plant enthusiasts devoted to promoting the aril and arilbred irises. Content includes events, culture and photographs.
   http://www.arilsociety.org/