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 includes only completed or topped out buildings. 25 countries have supertall skyscrapers (above 300 m) and 4 countries have megatall skyscrapers (above 600 m (1,969 ft)). Many countries constructed their tallest buildings in the 2010s, with the oldest tallest building being Caracol in Belize, which has stood as the country's tallest building since 1200 BC.

Completed or topped out
The list includes the tallest completed or topped out buildings in each country in the world. Heights are measured to the architectural top, with antennae being excluded.

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Under construction
The list includes the tallest under construction buildings that will become their nation's tallest building upon completion.