Widely known for his pioneering work in conflict transformation, Lederach is involved in conciliation work in Colombia, the Philippines, and Nepal, plus countries in East and West Africa. He has helped design and conduct training programs in 25 countries across five continents. In August 2013, Lederach was appointed director of the Peace Accords Matrix, the Kroc Institute's unique source of comparable data on all comprehensive peace agreements that have been signed since 1989.

Lederach is the author of 22 books, including When Blood and Bones Cry Out: Journeys Through the Soundscape of Healing and Reconciliation, (University of Queensland Press, 2010), The Moral Imagination: The Art and Soul of Building Peace (Oxford University Press, 2005), The Journey Toward Reconciliation (Herald Press, 1999), Building Peace: Sustainable Reconciliation in Divided Societies (USIP, 1997), and Preparing for Peace: Confliction Transformation Across Cultures (Syracuse University Press, 1995).

Lederach holds a Ph.D. in sociology from the University of Colorado (1988).