The International Telecommunication Union (ITU) [Note 1] is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Union, significantly predating the UN and making it the oldest UN agency.

The International Telecommunication Union (ITU) is a United Nations specialised agency bringing together governments and industry to develop efficient and affordable global telecommunication networks and services. It focuses on standardisation, radio spectrum management, and the development of and access to information communication technology.