Frances Moore Lappé is an American researcher and author in the field of food and democracy policy. She is the author of 20 books including the 2.5-million-copy selling 1971 book Diet for a Small Planet, which the Smithsonian's National Museum of American History describes as "one of the most influential political tracts of the times." She has co-founded three organizations that explore the roots of hunger, poverty, and environmental crises, as well as solutions emerging worldwide through what she calls "living democracy". Her latest work is a report entitled Crisis of Trust: How Can Democracies Protect Against Dangerous Lies? with Max Boland and Rachel Madison. Recent books by Lappé include Daring Democracy: Igniting Power, Meaning, and Connection for the America We Want, co-authored with Adam Eichen, and It’s Not Too Late: Crisis, Opportunity, and the Power of Hope. In 1987, she was awarded the Right Livelihood Award for "revealing the political and economic causes of world hunger and how citizens can help to remedy them."

Diet for a Small Planet is a 1971 book by Frances Moore Lappé. It was a bestseller in the West, and argues for the potential role of soy as a superior form of protein. It demonstrates the environmental impact of meat production and a contributor to global food scarcity. She argued for environmental vegetarianism—practicing a vegetarian lifestyle out of concerns over animal-based industries and the production of animal-based products.