The world's leading emitter of planet-warming carbon dioxide is China, followed distantly by the United States and the 27 countries that make up the European Union. In recent years, China has accounted for a growing share of the world's total carbon emissions.

Source: “CO2 emissions of all world countries,” European Commission, p. 12, 2022,

Data for the graphic are as follows:

Country Percentage of Carbon Dioxide Emissions
China 32.9%
United States 12.6%
European Union 7.3%
India 7.0%
Russia 5.1%
Japan 2.9%

close window