Joanna Rogers Macy (born May 2, 1929) is an environmental activist, author, and scholar of Buddhism, general systems theory, and deep ecology.

[1] She was married to the late Francis Underhill Macy, the activist and Russian scholar who founded the Center for Safe Energy.

Her doctoral work, under the mentorship of Ervin László, focused on convergences between causation in systems thinking and the Buddhist central doctrine of mutual causality or interdependent co-arising.

Macy is an international spokesperson for anti-nuclear causes, peace, justice, and environmentalism,[1] most renowned for her book Coming Back to Life: Practices to Reconnect Our Lives, Our World and the Great Turning initiative, which deals with the transformation from, as she terms it, an industrial growth society to what she considers to be a more sustainable civilization.

Gregory Bateson, through his Steps to an Ecology of Mind and in a summer seminar, also shaped her thought, as did the writings of Ludwig von Bertalanffy, Arthur Koestler, and Hazel Henderson.