This chapter describes and analyzes the UN's contribution to the field of trade and development. Despite UN treaty-making being scarce in this area, the Organization has played a decisive role in the building and shaping of the multilateral trading system. In particular, the United Nations Conference on Trade and Development (UNCTAD) has allowed for a better integration of developmental concerns within multilateral trade. In addition to these aspects of direct influence by the UN, it has also had some indirect impact on the construction of the jurisprudence in the context of the WTO dispute settlement system.