List of countries by population in 1939
This is a list of countries by population in 1939, providing an approximate overview of the world population before World War II.
Estimate numbers are from the beginning of the year, and exact population figures are for countries that were having a census in the year 1939.
List
| Rank | Country/territory | Population | Percentage of world's population |
| World | 2,300,000,000 | – | |
| 1 |  British Empire|size=23pxcollapsible list |
