List of tallest buildings
The international non-profit organization Council on Tall Buildings and Urban Habitat (CTBUH) was formed in 1969 and announces the title of "The World's Tallest Building" and sets the standards by which buildings are measured. It maintains a list of the 100 tallest completed buildings in the world. The organization currently ranks Burj Khalifa in Dubai as the tallest at . The CTBUH only recognizes buildings that are complete however, and some buildings included within the lists in this article are not considered finished by the CTBUH.
List of tallest buildings by country
The following is a list of the tallest buildings in the world by country listing only the tallest building in each country. The list is including only completed (or at least topped-out) buildings. A total of 20 countries featured in the list have supertall skyscrapers (300 m and more). Many countries have constructed new tallest buildings in the 2010s, with the oldest tallest building in a country being St. Olaf's Church in Tallinn, Estonia, which has stood as the country's tallest building since 1519.