| Aberdeen Branch, Scottish
Orchid Society, UK |
| Akashi
Orchid Society, Japan |
| All Japan Orchid Society |
| American Orchid Society |
| Asociación
de Orquideología de Quito, Quito, Ecuador |
| Associació
Catalana d'Amics de les Orquídies, Spain |
| Associazione
Lombarda Amatori Orchidee (ALAO), Varese, Italy |
| Associazione Triveneta Amatori
Orchidee (ATAO), Firenze, Italy |
| Australasian Native Orchid Society |
| Australasian Native
Orchid Society, Illawarra, Wollongong, Australia |
| Australasian
Native Orchid Society, Victoria Group, Victoria, Australia |
| Austrian Orchid Society, Vienna,
Austria |
| Bankstown Orchid
Society, Bankstown, Sydney, NSW, Australia |
| Batavia Orchid Society,
Batavia, IL |
| Blue Ridge
Orchid Society, VA |
| The Boca Raton Orchid
Society, Boca Raton, FL |
| Bournemouth Orchid
Society, Bournemouth, UK |
| Canadian
Orchid Congress |
| Cape and Islands
Orchid Society, Cape Cod, MA |
| Cape Orchid Society (South Africa) |
| Capital City
Orchid Society, Wellington, New Zealand |
| Carmel Orchid Society,
Monterey, CA |
| Catoctin Orchid Society,
Frederick, MD |
| Central East
Texas Orchid Society, Tyler, TX |
| Central
Florida Orchid Society, Orlando, FL |
| Central New York Orchid Society,
DeWitt, NY |
| Central Ohio
Orchid Society, Columbus, OH |
| Cincinnati
Judging Center, Cincinnati, OH |
| Círculo
Orquidófilo de Juiz de Fora, Juiz de Fora, MG, Brazil |
| Círculo Orquidófilo
Regional de Timbó, Timbó, SC, Brazil |
| Círculo Paulista de Orquidófilos, São
Paulo, SP, Brazil |
| Connecticut Orchid Society,
Rocky Hill, CT |
| Coral Springs Orchid
Society, Coral Springs, FL |
| Curacao Orchid Club,
Curacao, Netherlands Antilles |
| Cymbidium Society of America |
| Dallas Judging Center
(Texas), and Society Information |
| Dansk Orchide Klub (Danish Orchid Club) |
| Deep Cut Orchid Society, Colts
Neck, NJ |
| Delaware Orchid
Society, Wilmington, DE |
| Delray Beach
Orchid Society, Delray Beach, FL |
| Denver Orchid
Society, Denver, CO |
| Desert
Valley Orchid Society, Phoenix, AZ |
| Diablo View Orchid Society, East
San Francisco Bay Area, CA |
| East Everglades Orchid Society,
Homestead, FL |
| Eastern Canada Orchid
Society, Montreal, PQ, Canada |
| Finnish Orchid Society |
| Florida North Central (AOS) Judging
Center, Tampa, FL |
| Fort Lauderdale Orchid Society, Ft.
Lauderdale, FL
|
| Gainesville Orchid Society,
Gainesville, FL |
| Gold
Coast Unlimited Orchid Society, North Miami, FL |
| Grand Valley Orchid Society,
Walker, MI |
| Greater Omaha Orchid
Society, Omaha, NE |
| Greater Orlando
Orchid Society, Orlando, FL |
| Greater Philadelphia
Orchid Society, Philadelphia, PA |
| Groupement Midi-Pyrénées des
Amateurs d'Orchidées, France |
| Heart of Dixie Orchid Society,
Huntsville, AL |
|
Heart O' Texas Orchid
Society, Austin, TX |
| Hill Country Orchid
Society, New Braunfels, TX |
| Himeji
Orchid Society, Japan |
| Houston Orchid Society,
Houston, TX |
| Hutt Valley
Orchid Circle, Lower Hutt, New Zealand |
| Illinois Orchid Society, Chicago, IL |
| Iowa City Orchid Society,
Iowa City, IA |
| International Phalaenopsis Alliance |
| Kentucky Orchid Society,
Louisville, KY |
| Lafayette Orchid Society,
Lafayette, IN |
| Lincoln Orchid
Society, Lincoln, NE |
| Long Beach Amateur
Orchid Society, Long Beach, CA |
| Malibu Orchid Society, Malibu,
CA |
| Malihini Orchid
Society, Cupertino, CA |
| Maryland Orchid Society,
Baltimore, MD |
| Massachusetts Orchid Society,
Boston Area |
| The Maxillaria Tribe |
| Michiana Orchid Society,
South Bend, IN |
| Michigan Orchid Society,
Greater Detroit Area, MI |
| The Mid-America Orchid Congress |
| Mid Hudson Orchid Society,
Newburgh, NY |
| Missouri Orchid Society,
St. Louis, MO |
| Morioka
Orchid Society, Japan |
| Mt. Baker Orchid
Society, Mt. Vernon, WA |
| National Capital
Orchid Society, Washington, D.C. Area |
| Native Orchid Conservation Inc.,
Manitoba, Canada |
De Nederlandse Orchideeën Vereniging
/The Dutch Orchid Society, The Netherlands
Werkgroep
Masdevallia |
| New Hampshire Orchid Society,
Bedford, NH |
| New
Orleans Orchid Society, New Orleans, LA |
| The New
Zealand Native Orchid Society |
| Norsk Orkideforening - Norwegian
Orchid Society |
| North American Regional Orchid
Specialist Group |
| North Dade
Amateur Orchid Club, North Miami Beach, FL |
| North Jersey Orchid Society, East
Hanovoer, NJ |
| North of
England Orchid Society |
| Northwest Orchid
Society, Seattle, WA |
| The Odontoglossum Alliance |
| Oklahoma Orchid Society,
Oklahoma City, OK |
| The Orchid Digest |
| Orchid Societies
Council of Victoria, Victoria, Australia |
| Orchid Society of Alberta,
Edmonton, AB, Canada |
| Orchid Society of
California, Oakland, CA |
| Orchid Society of
Canberra, Canberra, Australia |
| Orchid Society of Great Britain,
London, UK |
| Orchid Society of Greater Kansas
City, Kansas City, MO |
| Orchid Society of Greater St.
Louis, St. Louis, MO |
| Orchid Society of Minnesota,
Minneapolis, MN |
| Orchid Society of Northern
Nevada, Reno, NV |
| Orchid Society of Northwestern
Pennsylvania, Erie, PA |
| Orchid Society of Santa
Barbara, Santa Barbara, CA |
| Orchid Society of South East
Asia, Singapore |
| Orchid Society of Southern California,
Burbank, CA |
| Orchid Stamp Club
International |
| Oregon Orchid Society,
Portland, OR |
| Ottawa Orchid
Society, Ottawa, ON, Canada |
| Peninsula
Orchid Society, San Mateo, CA |
| Peninsula Orchid Society of
Virginia, Hampton Roads, VA |
| Plantation Orchid
Society, Plantation, FL |
| Platinum Coast Orchid
Society, Central Florida |
| The Pleurothallid Alliance UK |
| Ramapo Orchid Society,
Englewood, NJ |
| The Royal Horticultural Society |
| Sacramento Orchid Society,
Sacramento, CA |
| San Diego County Orchid Society,
San Diego, CA |
| San Francisco Orchid Society,
San Francisco, CA |
| San Gabriel Valley Orchid Hobbyists,
Arcadia, CA |
| Sandhills
Orchid Society, Fayetteville,NC |
| The Slipper Orchid Alliance |
| Sociedad de Orquideología
del Estado Miranda (SOEM) - Miranda State´s Orchid Society - Venezuela |
| Sociedade Orquidófila de Brasília,
Brasília, Brazil |
| Sonoma County Orchid Society,
Santa Rosa, CA |
| South Bay Orchid
Society, Los Angeles, CA |
| South Jersey Orchid Society,
Wenonah, NJ |
| Staten Island
Orchid Society, Staten Island, NY |
| Sunset Empire Orchid Society,
Astoria, OR |
| Susquehanna Orchid
Society, Mechanicsburg, PA |
| Tacoma Orchid Society,
Tacoma, WA |
| Taipei Orchid Society, Taipei,
Taiwan (Chinese Big-5 Code) |
| Tropical Orchid
Society, West Palm Beach, FL |
| Trinidad & Tobago Orchid Society
|
| Venice Area
Orchid Society, Venice, FL |
| Virginia Orchid
Society, Richmond, VA |
| Virginia
Paphiopedilum Society, Hampton, VA |
| Volusia County Orchid
Society, DeLand, FL |
| Werkgroep Europese
Orchideeen/Society for European Orchids, The Netherlands |
| West Brisbane Orchid Society,
Brisbane, Australia |
| Western Suburbs Orchid Society, Sydney,
Australia |
|
Wisconsin Orchid Society,
Wauwatosa, WI |