The Wilderness Society Australia is a community-based, not-for-profit environmental advocacy organization founded in 1976 in Hobart, Tasmania. Originally established to campaign against the damming of the Franklin River, it has grown into a federation of eight state-based groups with around 34,000 members. The organization focuses on protecting, promoting, and restoring wilderness and natural processes across Australia.

The Wilderness Society engages in various activities, including environmental campaigning to safeguard forests, rivers, and habitats from threats like logging and mining. It advocates for strong environmental laws and addresses climate change through nonviolent lobbying and research. The organization also emphasizes community engagement, education, and fundraising to support its initiatives. With offices in major Australian cities, it coordinates local campaigns and fosters public involvement in environmental conservation.