Isabelle Annie J. Durant is a Belgian politician of the Ecolo party who served as Deputy Secretary-General of the United Nations Conference on Trade and Development (UNCTAD) from 2017 to 2021 and as acting Secretary-General of the organisation from 2021 to 2022.

The United Nations Conference on Trade and Development (UNCTAD) is an intergovernmental organization within the United Nations Secretariat that promotes the interests of developing countries in world trade. It was established in 1964 by the United Nations General Assembly (UNGA) and reports to that body and the United Nations Economic and Social Council (ECOSOC). UNCTAD is composed of 195 member states and works with nongovernmental organizations worldwide; its permanent secretariat is in Geneva, Switzerland.