Johannes Pieter "Jan" Pronk (Dutch pronunciation: [ˈjɑn ˈprɔnk]; born 16 March 1940) is a Dutch politician, diplomat, and professor. He has been visiting professor at the United Nations University for Peace in Ciudad Colón, Costa Rica, since 2009.Pronk was a member of the Labour Party (PvdA) from 1965 to 2013, serving three terms as Minister for Development Cooperation and one as Minister of Housing, Spatial Planning and the Environment in government cabinets between 1973 and 2002.