Antonio Gabriel "Tony" Maestrado La Viña (born October 22, 1959) is at present Associate Director for climate policy and international relations and concurrently Head, Klima Center of Manila Observatory and a professor of law, philosophy, politics and governance in several universities in the Philippines.
He is also a member of the Permanent Court of Arbitration in The Hague, the Chair of the Jurisprudence and Legal Philosophy Department of the Philippine Judicial Academy.
He is also Managing Partner of La Viña Zarate, a human rights, climate justice, and general litigation law firm.
La Viña was born in Cagayan de Oro to lawyer and academic Gabriel La Viña and Lourdes Maestrado y Chaves, who would later serve as city councilor for Cagayan de Oro, and is the daughter of Silvino Dacapio Maestrado, former Congressman for the 1st District of Misamis Province.
La Viña spent several years as a professor of law at UP in the 1990s, and as a human rights and environmental attorney serving indigenous peoples and other local communities.
That dissertation was later published as a book (Climate Change and Developing Countries: Negotiating a Global Regime) by the Institute of International Legal Studies of the University of the Philippines Law Center.
While studying at the University of the Philippines College of Law, La Viña co-founded with Supreme Court Associate Justice Marvic Leonen, Dr. Gus Gatmaytan now of Ateneo de Davao University, and Atty Nonette Royo who is director of the International Land and Forest Tenure Facility based in Stockholm, Sweden, the Legal Rights and Natural Resources Center-Kasama sa Kalikasan (LRC), a human rights and environmental organization.
[3][note 1] Part of his duties included serving as the DENR's Crisis Manager, where he dealt with the department's response to, among others, the Marcopper mining disaster.