- Aiea Orchid Club, Aiea, HI
- Alamo Orchid Society, San Antonio, TX
- American Orchid Society
- Amherst Orchid Society, Amherst, MA
- Ann Arbor Orchid Society, Ann Arbor, MI
- Arcadian Orchid Society, Lafayette, LA
- Atlanta Orchid Society, Atlanta, GA
- Batavia Orchid Society, Batavia, IL
- Baton Rouge Orchid Society, Baton Rouge, LA
- Blackhawk Orchid Society, Rockford, IL
- Blue Ridge Orchid Society, Roanoke, VA
- Boca Raton Orchid Society, Boca Raton, FL
- Brevard County Orchid Society, Melbourne, FL
- Canadian Orchid Congress
- Cape and Islands Orchid Society, Cape Cod, MA
- Cape Fear Orchid Society, Wilmington, NC
- Catoctin Orchid Society, Frederick, MD
- Central California Orchid Society, Fresno, CA
- Central East Texas Orchid Society, Tyler, TX
- Central Florida Orchid Society, Orlando, FL
- Central Illinois Orchid Society, Champaign-Urbana, IL
- Central Indiana Orchid Society, Indianapolis, IN
- Central Iowa Orchid Society, Des Moines, IA
- Central Jersey Orchid Society, Princeton, NJ
- Central New York Orchid Society, Baldwinsville, NY
- Central Ohio Orchid Society, Columbus, OH
- Central Ontario Orchid Society, Waterloo, ON, Canada
- Central Vancouver Island Orchid Society, Nanaimo, BC, Canada
- Chicago Judging Center, Glencoe, IL
- Coalition for Orchid Species, Coral Gables, FL
- Coastal Carolina Orchid Society, Charleston, SC
- Coastal Valley Orchid Society, Lompoc, CA
- Colorado Springs Orchid Society, Colorado Springs, CO
- Connecticut Orchid Society, Rocky Hill, CT
- Coral Springs Orchid Society, Coral Springs, FL
- Cymbidium Society of America
- Cymbidium Society of America, Orange County Branch
- Dallas Judging Center (Texas), and Society Information
- Deep Cut Orchid Society, Middletown, NJ
- Deep South Orchid Society, Savannah, GA
- 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
- Dunes-Kalamazoo Orchid Society, Kalamazoo, MI
- East Everglades Orchid Society, Homestead, FL
- Eastern Canada Orchid Society, Montreal, PQ, Canada
- Eastern Iowa Orchid Society (formerly Iowa City Orchid Society), Iowa City, IA
- Englewood Area Orchid Society, Englewood, FL
- Essex County Orchid Society, Windsor, ON, Canada
- Ewa Orchid Society, Ewa, HI
- Fairfield County Orchid Association, Westport, CT
- Five Cities Orchid Society, Arroyo Grande, CA
- Florida North Central (AOS) Judging Center, Tampa, FL
- Florida West Coast Orchid Society, Largo, FL
- Florida-Caribbean Regional Judging Center, Miami, FL
- Foothills Orchid Society, Calgary, AB, Canada
- Fort Lauderdale Orchid Society, Ft. Lauderdale, FL
- Fort Pierce Orchid Society, Fort Pierce, FL
- Fraser Valley Orchid Society, Langley, BC, Canada
- Gainesville Orchid Society, Gainesville, FL
- Garden Island Orchid Society, Hanapepe, Kauai, HI
- Genesee Region Orchid Society, Rochester, NY
- Gold Coast Cymbidium Growers, San Mateo, CA
- Grand Valley Orchid Society, Walker, MI
- Greater Akron Orchid Society, Akron, OH
- Greater Cleveland Orchid Society, Cleveland, OH
- Greater Cincinnati Orchid Society, Cincinnati, OH
- Greater Lansing Orchid Society, Lansing, MI
- Greater New York Orchid Society, Bronx, NY
- Greater North Texas Orchid Society, Dallas, TX
- Greater Omaha Orchid Society, Omaha, NE
- Greater Orlando Orchid Society, Orlando, FL
- Greater Philadelphia Orchid Society, Philadelphia, PA
- Heart O' Texas Orchid Society, Austin,TX
- Heart of Dixie Orchid Society, Huntsville, AL
- Hilo Orchid Society, Hilo, HI
- Hollin Hills Orchid Society, Arlington, VA
- Honolulu Orchid Society, Honolulu, HI
- Houston Judging Center (Texas)
- Houston Orchid Society, Houston, TX
- Illini Orchid Club, Urbana-Champaign, IL
- Illinois Orchid Society, Chicago, IL
- Illowa Orchid Society, Moline, IL
- International Phalaenopsis Alliance
- Jupiter/Tequesta Orchid Society, Jupiter, FL
- Kaimuki Orchid Society, Honolulu, HI
- Kansas Orchid Society, Wichita, KS
- Kentucky Orchid Society, Louisville, KY
- Kingston Orchid Society, Kingston, ON, Canada
- Kona Orchid Society, Kailua-Kona, HI
- Kunia Orchid Society, Mililani, HI
- Lehigh Valley Orchid Society, Allentown, PA
- Les Orchiophiles de Montreal, Montreal, PQ, Canada
- Les Orchidophiles de Quebec, Quebec City, PQ, Canada
- Les Orchidophiles du Saguenay-Lac-St-Jean, Jonquirère, PQ, Canada
- Lincoln Orchid Society, Lincoln, NE
- London Orchid Society, London, ON, Canada
- Long Beach Amateur Orchid Society, Long Beach, CA
- Malibu Orchid Society, Malibu, CA
- Malihini Orchid Society, Cupertino, CA
- Manatee Orchid Society, Bradenton, FL
- Manatee River Orchid Society, Bradenton, FL
- Manhattan Orchid Society, New York City, NY
- Manitoba Orchid Society, Winnipeg, MB, Canada
- Maryland Orchid Society, Baltimore, MD
- Massachusetts Orchid Society, Boston Area
- Maui Orchid Society, Kahului, HI
- The Maxillaria Tribe
- Memphis Orchid Society, Memphis, TN
- Miami Valley Orchid Society, Dayton, OH
- Michiana Orchid Society, South Bend, IN
- Michigan Orchid Society, Greater Detroit Area, MI
- The Mid-America Orchid Congress
- Mililani Orchid Club, Mililani, HI
- Naples Orchid Society, Naples, FL
- National Capital Orchid Society, Washington, D.C. Area
- Native Orchid Conservation Inc., Manitoba, Canada
- Native Orchid Conference, Inc.
- New Hampshire Orchid Society, Bedford, NH
- New Orleans Orchid Society, New Orleans, LA
- Newport Harbor Orchid Society, Newport Beach, CA
- Niagara Frontier Orchid Society, Buffalo, NY
- Niagara Region Orchid Society, St. Catharines, ON, Canada
- North Carolina Piedmont Orchid Society, Charlotte, NC
- North Dade Orchid Club, North Miami Beach, FL
- North Jersey Orchid Society, East Hanover, NJ
- North Okanagan Orchid Society, Vernon, BC, Canada
- Northeastern Pennsylvania Orchid Society, Grimes Industrial Park, Pittston Twp., PA
- Northeastern Wisconsin Orchid Society, Green Bay, WI
- Northwest Orchid Society, Seattle, WA
- Northwestern Michigan Orchid Society, Traverse City, MI
- Ocean State Orchid Society, Wickford, RI
- The Odontoglossum Alliance
- Okanagan Orchid Society, Kelowna, BC, Canada
- Oklahoma Orchid Society, Oklahoma City, OK
- Orange County Orchid Society, Yorba Linda, CA
- Orchid Conservation Alliance
- Orchid Conservation Coalition - 1% for Orchid Conservation!
- The Orchid Digest
- The Orchid Forum of Sacramento, Sacramento, CA
- Orchid Growers' Guild, Inc., Madison, WI
- Orchid Societies in Southern California
- Orchid Society of Alberta, Edmonton, AB, Canada
- Orchid Society of Arizona, Phoenix, AZ
- Orchid Society of California, Oakland, CA
- Orchid Society of Coral Gables, Coral Gables, FL
- Orchid Society of Greater Kansas City, Kansas City, MO
- Orchid Society of Greater St. Louis, St. Louis, MO
- Orchid Society of Highlands County, Sebring, FL
- Orchid Society of Middle Tennessee, Nashville, TN
- Orchid Society of Minnesota, Minneapolis, MN
- Orchid Society of Northern Nevada, Reno, NV
- Orchid Society of Northwestern Pennsylvania, Erie, PA
- Orchid Society of Nova Scotia, Halifax, Nova Scotia
- Orchid Society of the Ozarks, Springdale, AR
- Orchid Society of the Royal Botanical Gardens, Burlington, ON, Canada
- Orchid Society of Santa Barbara, Santa Barbara, CA
- Orchid Society of Southern California, Burbank, CA
- Orchid Society of Western Pennsylvania, Pittsburgh, PA
- The Orchid Species Preservation Foundation of Alberta, Edmonton, AB, Canada
- Oregon Orchid Society, Portland, OR
- Ottawa Orchid Society, Ottawa, ON, Canada
- Pacific Central (AOS) Judging Center - Oakland/San Francisco, CA
- Pacific Orchid Society of Hawaii, Honolulu, Hawaii
- Palomar Orchid Society, Carlsbad, CA
- Pan American Orchid Society, FL
- Peninsula Orchid Society, San Mateo, CA
- Peoria Orchid Society, Peoria, IL
- Platinum Coast Orchid Society, Central Florida
- The Pleurothallid Alliance, US
- Port St. Lucie Orchid Society, Port Saint Lucie, FL
- Portland Orchid Society, Portland, OR
- Prairie State Orchid Society, Springfield, IL
- Ramapo Orchid Society, Englewood, NJ
- Rhode Island Orchid Society, Providence, RI
- Richmond Orchid Alliance - Richmond, VA
- Ridge Orchid Society, Lakeland, FL
- Riverside-San Bernardino Counties Orchid Society, Redlands, CA
- Rogue Valley Orchid Society, Medford, OR
- Sacajawea Orchid Society, Bozeman, MT
- Sacramento Orchid Society, Sacramento, CA
- Saginaw Valley Orchid Society, Freeland, MI
- Saint Augustine Orchid Society, St. Augustine, FL
- 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
- Santa Clara Valley Orchid Society, San Jose, CA
- Sarasota Orchid Society, Sarasota, FL
- Saskatchewan Orchid Society, Saskatoon, SK, Canada
- Sioux Falls Orchid Club, Sioux Falls, SD
- The Slipper Orchid Alliance
- Sonoma County Orchid Society, Santa Rosa, CA
- South Bay Orchid Society, Palos Verdes, CA
- South Carolina Orchid Society, Columbia, SC
- South Coast Orchid Society, Inc., Long Beach, CA
- South Florida Orchid Society, Miami, FL
- South Jersey Orchid Society, Wenonah, NJ
- Southeastern Pennsylvania Orchid Society, Valley Forge, PA
- Southern California Orchid Species Society, Placentia, CA
- Southern Ontario Orchid Society, Toronto, ON, Canada
- SouthWest Regional Orchid Growers Association, Inc. (SWROGA), US
- Spokane Orchid Society, Spokane, WA
- Suffolk Orchid Society, Stony Brook, NY
- Susquehanna Orchid Society, Mechanicsburg, PA
- Tacoma Orchid Society, Tacoma, WA
- Tallahassee Orchid Society, Tallahassee, FL
- Tampa Bay Orchid Society, Tampa Bay, FL
- Tampa Orchid Club, Tampa, FL
- Terrebonne Orchid Society, Houma, LA
- Tidewater Orchid Society, Norfolk, VA
- Toronto Artistic Orchid Association, Toronto, ON, Canada
- Treasure Valley Orchid Society, Boise, ID
- Triad Orchid Society, Greensboro, NC
- Triangle Orchid Society, Durham, NC
- Tropical Orchid Society, West Palm Beach, FL
- Vallarta Orchid Society, Puerto Vallarta, Mexico
- Vancouver Orchid Society, Vancouver, BC, Canada
- Venice Area Orchid Society, Venice, FL
- Vero Beach Orchid Society, Vero Beach, FL
- Victoria Orchid Society,Victoria, BC, Canada
- Virginia Orchid Society, Richmond, VA
- Washington (State) Native Orchids Club
- Western North Carolina Orchid Society, Asheville, NC
- Windsor Orchid Society - La Societé des Orchidophiles de Windsor, Windsor, ON, Canada
- Windward Orchid Society, Kaneohe, HI
- Wisconsin Orchid Society, Wauwatosa, WI
- The World Orchid Conference Trust
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