Depending on the nation, obtaining citizenship might be simple or complicated.
In countries where birthright citizenship is guaranteed, those born there are likely to have an easier time obtaining dual nationality in other countries.
Certain limitations may apply even in nations where dual citizenship is permitted. The military and public office are two examples where a person having dual citizenship may not be qualified.
Dual citizenship is permitted in several countries, but only under certain circumstances.

The regulations governing citizenship differ from one nation to the next. If the requirements of both countries are satisfied, a person may have dual citizenship in countries where it is legal.
Also See: Common Law Countries 2022
The following is a complete list of countries that allow dual nationality.
Country | 2022 Population |
---|---|
United States | 334805.2690 |
Pakistan | 229488.9940 |
Nigeria | 216746.9340 |
Brazil | 215353.5930 |
Bangladesh | 167885.6890 |
Russia | 145805.9470 |
Mexico | 131562.7720 |
Philippines | 112508.9940 |
Egypt | 106156.6920 |
Turkey | 85561.9760 |
Germany | 83883.5960 |
United Kingdom | 68497.9070 |
France | 65584.5180 |
South Africa | 60756.1350 |
Italy | 60262.7700 |
South Korea | 51329.8990 |
Spain | 46719.1420 |
Argentina | 46010.2340 |
Algeria | 45350.1480 |
Canada | 38388.4190 |
Poland | 37739.7850 |
Angola | 35027.3430 |
Peru | 33684.2080 |
Australia | 26068.7920 |
Malawi | 20180.8390 |
Syria | 19364.8090 |
Chile | 19250.1950 |
Romania | 19031.3350 |
Benin | 12784.7260 |
Bolivia | 11992.6560 |
Belgium | 11668.2780 |
Czech Republic | 10736.7840 |
Greece | 10316.6370 |
Sweden | 10218.9710 |
Portugal | 10140.5700 |
Hungary | 9606.2590 |
Israel | 8922.8920 |
Switzerland | 8773.6370 |
Serbia | 8653.0160 |
Bulgaria | 6844.5970 |
Denmark | 5834.9500 |
Finland | 5554.9600 |
Norway | 5511.3700 |
Costa Rica | 5182.3540 |
Ireland | 5020.1990 |
New Zealand | 4898.2030 |
Panama | 4446.9640 |
Croatia | 4059.2860 |
Jamaica | 2985.0940 |
Armenia | 2971.9660 |
Albania | 2866.3740 |
Slovenia | 2078.0340 |
Latvia | 1848.8370 |
Cyprus | 1223.3870 |
Luxembourg | 642.3710 |
Malta | 444.0330 |
Belize | 412.1900 |
Iceland | 345.3930 |
Vanuatu | 321.8320 |
Barbados | 288.0230 |
Antigua and Barbuda | 99.5090 |