The mission of Friends of Katahdin Woods and Waters is to preserve and protect the outstanding natural beauty, ecological vitality and distinctive cultural resources of Katahdin Woods and Waters National Monument and surrounding communities for the inspiration and enjoyment of all generations.

The Chewonki Foundation is a non-profit institution in Wiscasset, Maine which runs educational programs with an environmental focus.

Maine Coast Heritage Trust is a nonprofit land conservation organization increasing access to the coast for everyone, making the coast more resilient to climate change, and supporting coastal communities.