Paul-Hugo Suding (born 23 January 1949 in Vechta, Germany) is an energy economist and international development specialist, living in Saint-Christophe, Aosta Valley region in Italy. Suding was the first Head of Secretariat of the Global Renewable Energy Policy Network REN21 in Paris, from 2006 to 2008. He held numerous long term assignments to countries and development organizations as program director for Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, from which he retired in 2014.Suding has published more than 100 books and articles on energy, environment, climate, including refereed articles. He is one of the first recipients of the Theodor Wessels Award in the category of doctor dissertations.