| Alaska Orchid Society |
| Amherst Orchid Society |
| Arkansas Orchid Society |
| Atherton Tableland Orchid Society |
| Batavia Orchid Society |
| Baton Rouge Orchid Society |
| Bay of Plenty Orchid Society |
| Brazos Valley Orchid Society |
| Calcasieu Orchid Society |
| Caloundra Orchid Society |
| Cape & Island Orchid Society |
| Cape Fear Orchid Society |
| Central Iowa Orchid Society |
| Central Missouri Orchid Society |
| Central New York Orchid Society |
| Central Vancouver Island Orchid Society |
| Coastal Carolina Orchid Society |
| Colorado Springs Orchid Society |
| Conejo Orchid Society |
| Connecticut Orchid Society |
| Deep Cut Orchid Society |
| Denver Orchid Society |
| Desert Valley Orchid Society |
| Eastern District Orchid Society |
| F.F.A.O. |
| Five Cities Orchid Society |
| Foothills Orchid Society |
| Fort Lauderdale Orchid Society |
| Fort Worth Orchid Society |
| Gainesville Orchid Society |
| Galveston Bay Orchid Society |
| German Orchid Society |
| Greater Las Vegas Orchid Society |
| Greater North Texas Orchid Society |
| Greater Omaha Orchid Society |
| Greater Pensacola Orchid Society |
| Greater Philadelphia Orchid Society |
| Gulf Coast Orchid Society |
| Gympie & District Orchid Society |
| Heart O’Texas Orchid Society |
| High Desert Orchid Society |
| Hilo Orchid Society |
| Houston Orchid Society |
| Huntsville Orchid Society |
| Illowa Orchid Society |
| Kansas Orchid Society |
| Kentucky Orchid Society |
| Ku Ring Gai Orchid Society |
Les Orchidophiles de Montreal
Les Orchidophiles de Quebec |
| London Orchid Society |
| Long Beach Amateur O. S. |
| Mackay & District Orchid Society Inc |
| Maine Orchid Society |
| Manawatu Orchid Society |
| Maryland Orchid Society |
| Massachusetts Orchid Society |
| McAllen International Orchid Society |
| Memphis Orchid Society |
| Michigan Orchid Society |
| Mount Baker Orchid Society |
| Napa Valley Orchid Society |
| National Capitol Orchid Society |
| New Hampshire Orchid Soc. |
| Newport Harbor Orchid Society |
| North Carolina Piedmont Orchid Society |
| North Jersey Orchid Society |
| North Queensland Orchid Society Cairns Inc |
| North Shore Orchid Society |
| Northeastern New York Orchid Society |
| Northeastern Wisconsin Orchid Society |
| Northwest Orchid Society |
| Northwestern Michigan Orchid Society |
| Nutmeg State Orchid Society |
| Ocean State Orchid Society |
| Oklahoma Orchid Society |
| Orange County Orchid Society |
| Orchid Safari |
| Orchid Society of Alberta |
| Orchid Society of Canberra |
| Orchid Society of Great Britain |
| Orchid Society of Greater Kansas City |
| Orchid Society of Greater St Louis |
| Orchid Society of Minnesota |
| Orchid Society Northern Transvaal |
| Orchid Society of NW Pennsylvania |
| Orchid Society of the Ozarks |
| Orchid Society of Santa Barbara |
| Orchid Society of Southeast Asia |
| Orchid Society of Southern California |
| Orchid Society of Western Pennsylvania |
| Oregon Orchid Society |
| Ottawa Orchid Society |
| Portland Orchid Society |
| Prairie State Orchid Society |
| Prescott Orchid Society |
| Red River Orchid Society |
| Rhone Alpes Orchidees |
| Riverside San Bernardino Counties Orchid Society |
| Rocky Mountain Judging Center |
| Sacramento Orchid Society |
San Fernando Valley Orchid Soc.
San Francisco Orchid Society |
| San Gabriel Valley Orchid Hobbyists |
| Santa Cruz Orchid Society |
| Saskatchewan Orchid Society |
| Sonoma County Orchid Society |
| South Bay Orchid Society |
| South Carolina Orchid Society |
| South Coast Orchid Society |
| South Metro Orchid Society |
| Southern Ontario Orchid Society |
| Species Orchid Society of Western Australia |
| St Augustine Orchid Society |
| Susquehanna Orchid Society |
| Tampa Bay Orchid Society |
| Tampa Orchid Club |
| Terrebonne Orchid Society |
| The Cape Orchid Society |
| The Orchid Society of SE Asia |
| The Slipper Orchid Alliance |
| Triad Orchid Society |
| Tri-Cities Orchid Society |
| Tropical Plant Society |
| Tulsa Orchid Society |
| Tygerberg Orchid Group |
| Utah Orchid Society |
| Vancouver Orchid Society |
| Ventura County Orchid Society |
| Victoria Orchid Society |
| Volusia County Orchid Society |
| Wellington Orchid Society |
| Whangarei Orchid Society |
