- American Lighthouse Foundation
 - Foundation dedicated to the preservation of lighthouse, lightship, and lifesaving station artifacts and documents. - Association of Lighthouse Keepers
- Organisation of members and enthusiasts throughout the world who share an interest in lighthouses and other coastal and inland aids to navigation. Quarterly journal, meetings, trips, regalia, and growing archive on pharology.
- Cape Ann Light Station on Thacher Island
- Visitor information about twin lighthouses of the Cape Ann Light Station on Thacher Island, Massachusetts, off the coast of Rockport. Find out about the lighthouses' history, or plan your visit.
- Commissioners of Irish Lights
- General lighthouse authority for all of Ireland and its adjacent seas and islands. The Commisioners of Irish Lights finance, manage, and maintain Irish lighthouses and light stations.
- Delaware River & Bay Lighthouse Foundation
- Caretaker organisation for three historic Delaware lighthouses: Harbour of Refuge Lighthouse, Delaware Breakwater East End Lighthouse, and Liston Range Rear Light.
- Florida Lighthouse Association
- Organisation devoted to the restoration of Florida's lighthouses, light stations, and maritime masterpieces. With lighthouse news, an image gallery, and membership information.
- Lighthouses of Australia
- Nonprofit organisation for the preservation and promotion of historic Australian lighthouses. Offers photos and profiles of individual light stations, preservation news, and a recommended book list.
- National Historic Lighthouse Preservation Program
- From the United States Department of the Interior. Information on the transfer of historic lighthouses (at no cost) to federal agencies, state and local governments, nonprofit corporations, and community development organisations.
- New England Lighthouse Lovers
- Lighthouse preservation and appreciation society, teaching about lighthouses and maritime history through educational meetings, programmes, fundraising for lighthouse restoration, and site visits.
- New Jersey Lighthouse Society
- Northern Lighthouse Board
- General Lighthouse Authority responsible for lighthouse and light station management in Scotland and the Isle of Man.
- Nova Scotia Lighthouse Preservation Society
- Organisation dedicated to the preservation of lighthouses and light stations in Nova Scotia, Canada. Find interactive lighthouse maps, tour information, photos, and restoration news.
- Outer Banks Lighthouse Society
- Organisation founded in 1994 to aid in the preservation of the lighthouses in the Morehead City, North Carolina area.
- Project Gurnet and Bug Lights
- Preservation group working to repair, restore, and maintain Bug Light and Gurnet Light, two historic lighthouses in Massachusett's Plymouth Harbour.
- Swedish Lighthouse Society
- Organisation dedicated to preserving and appreciating Sweden's lighthouses and light stations. Find information about SLS memberships, lighthouse profiles, and society activities. In English and Swedish.
- Trinity House
- Charitable corporation formed by Royal Charter in 1514, responsible for maritime navigation aids around the U.K., including buoys, lighthouses, and shipping lanes.
- United States Lighthouse Society (2)
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