- American Orchid Society
- Features orchid care and advice, books and gifts, awards, classes, pictures, ailments, events, links, and discussion boards.
- Australasian Native Orchid Society
- Dedicated to the cultivation, conservation and scientific study of native orchids in the Australasian region.
- Diablo View Orchid Society
- Seeks to provide for the exchange and dissemination of information relating to the culture of orchids among members.
- National Capital Orchid Society
- Features a calendar of events and membership information.
- New Hampshire Orchid Society
- Includes online workshops, slides, and videos and demonstrations about orchid culture, conservation and preservation.
- Orchid Society of California
- Dedicated to the culture, protection,and appreciation of orchids all over the world.
- Orchid Society of Nova Scotia
- Organization dedicated to the cultivation, study, conservation and enjoyment of orchids in Nova Scotia, Canada.
- Rhode Island Orchid Society
- Website features a calendar of events, and membership information.
- San Diego County Orchid Society
- Provides an online newsletter, membership information, and news.
- San Francisco Orchid Society
- Features an online newsletter, a calendar of events, and a list of member services.
- South Florida Orchid Society
- Not-for-profit membership cooperation dedicated to the improvement and conservation of orchids through education and research.
- Southeastern Pennsylvania Orchid Society
- Offers a calendar of events, awards, and membership information.
- Trinidad and Tobago Orchid Society
- Includes news, membership information, and a calendar of events.
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