UNESCO cooperates with intergovernmental organizations, in particular the United Nations and its organizations and other intergovernmental organizations (IGOs).
Within the framework of the mandate established in its Constitution, UNESCO cooperates with intergovernmental organizations (IGOs) which do not belong to the United Nations system but have working relations with UNESCO and with which UNESCO has concluded formal agreements or ad hoc arrangements.
In order to strengthen such cooperation, UNESCO has signed agreements with 87 IGOs.
UNESCO maintains close collaboration and operational relations with a number of multilateral organizations, including the European Union and Multilateral Development Banks.