The United Nations Industrial Development Organization (UNIDO) is a specialized agency of the United Nations that assists countries in economic and industrial development. It is headquartered at the UN Office in Vienna, Austria, with a permanent presence in over 60 countries. As of April 2019, UNIDO comprises 170 member states, which together set the organization's policies, programs, and principles through the biannual General Conference.

The United Nations Office at Vienna (UNOV) is one of the four major office sites of the United Nations where numerous different UN agencies have a joint presence. The office complex is located in Vienna, the capital of Austria, and is part of the Vienna International Centre, a cluster of several major international organizations. UNOV was established on 1 January 1980, and was the third such complex to be created.