Axis Powers:
- Germany
- Italy
- Japan
- Hungary
- Romania
- Bulgaria
- Finland
Allied Powers:
- United States
- United Kingdom
- France
- Soviet Union
- China
- Poland
- Canada
- Australia
- New Zealand
- Yugoslavia
- Greece
- Belgium
- Netherlands
- Luxembourg
- Czechoslovakia
- Norway
- Denmark
- Brazil
- Mexico
There were also a number of other countries that participated in the war on either side, including:
Co-Belligerents of the Axis Powers:
- Albania
- Croatia
- Slovakia
- Thailand
- Iraq
- Vichy France
Co-Belligerents of the Allied Powers:
- India
- Burma
- Ethiopia
- Mongolia
- Nepal
- Philippines
- Cuba
- Panama
- Dominican Republic
- Guatemala
- El Salvador
- Honduras
- Nicaragua
- Costa Rica
- Haiti