UN elects first female tech agency secretary-general
Ms Bogdan-Martin beat her Russian rival Rashid Ismailov by 139 votes to 25
The ITU is the main technology agency within the UN.
Originally founded in 1865 to manage the first international telegraph networks, the ITU now has an important role in facilitating the use of radio, satellite and the internet.
Ms Bogdan-Martin beat her Russian rival Rashid Ismailov by 139 votes to 25.
The American will succeed Houlin Zhao, who has been in the role since 2014, when her term begins on 1 January 2023.
She will be taking the reins of the oldest UN agency, which is responsible for many facets of international communications.
These include assigning satellite orbits globally, co-ordinating technical standards, and improving infrastructure in the developing world.
There had been concerns ahead of the election because Ms Bogdan-Martin's opponent had previously called for international regulation of the internet.
She said she believes the ITU has an opportunity to help many of these issues.