The present report is the final output of the third international workshop on incentive measures, which was held from 6 to 8 October 2009, with financial assistance from the Government of Spain, at the premises of the Division of Technology, Industry, and Economics of the United National Environment Programme (UNEP-DTIE) in Paris, France. Its task, as requested by the Conference of the Parties at its ninth meeting, was to collect, exchange and analyze information, including case studies- on, good practices for, and lessons learned from, concrete and practical experiences in identifying and removing or mitigating so-called perverse incentive measures—that is, incentive measures that have harmful effects on biodiversity, and in promoting positive incentive measures, and to identify a limited number of good-practice cases from different regions. The participants in the Workshop were selected from among government-nominated practitioners, taking into account their expertise and the need to ensure balanced geographical distribution, and with due regard to gender balance. Representatives of the following stakeholder organizations and international organizations and initiatives were also attending the meeting: the Scientific and Technical Advisory Panel of the Global Environment Facility (GEF-STAP), the United Nations Conference on Trade and Development (UNCTAD), the UN Environment, the initiative on the Economics of Ecosystem Services and Biodiversity (TEEB), the International Union for the Conservation of Nature (IUCN), the Organization of Economic Co-operation and Development (OECD), the German League for Nature and Environment (DNR), the Institute for European Environmental Policy (IEEP), and the International Research Institute for Sustainability.