Marvic Leonen

Marvic Mario Victor Famorca Leonen (born December 29, 1962) is the Senior Associate Justice of the Supreme Court of the Philippines since May 14, 2022 upon the retirement of Senior Associate Justice Estela Perlas-Bernabe. He became an associate justice of the Supreme Court of the Philippines on November 21, 2012 – the second youngest jurist to hold the said position and the youngest after Manuel V. Moran in 1938. Prior to his stint in the country's highest court, he served as chief peace negotiator of the Republic of the Philippines in peace talks with the Moro Islamic Liberation Front. Leonen has been called, "The Great Dissenter" of the Supreme Court, often standing close to liberal and human rights-oriented decisions against the conservative bench close to Rodrigo Duterte and related dictatorial beliefs.

Leonen was dean of the University of the Philippines College of Law at Diliman from 2008 to 2011. He is well known in the fields of environmental activism and community organizing.