Leonardo Boff (Portuguese pronunciation: [leo'na?du 'b?f], born December 14, 1938), born as Genézio Darci Boff (pronounced [?e'n?zju da?'si 'b?f]), is a Brazilian theologian, philosopher and writer, known for his active support for liberation theology.
He currently serves as Professor Emeritus of Ethics, Philosophy of Religion, and Ecology at the Rio de Janeiro State University.