Source: Dual Citizenship Report, reddit.com/user/JoeFalchetto
How many years of residence required for naturalization?
*Duration of legal residence before a national of a foreign state, without any cultural, historical, or marriage ties or connections to the state in question, can request citizenship under that state’s naturalization laws (years).
San Marino: 30 years
Andorra: 20 years
Austria: 10 years
Italy: 10 years
Latvia: 10 years
Liechtenstein: 10 years
Lithuania: 10 years
Moldova: 10 years
Monaco: 10 years
Montenegro: 10 years
Poland: 10 years
Slovenia: 10 years
Spain: 10 years
Switzerland: 10 years
Denmark: 9 years
Bosnia and Herzegovina: 8 years
Croatia: 8 years
Estonia: 8 years
Germany: 8 years
Hungary: 8 years
North Macedonia: 8 years
Romania: 8 years
Slovakia: 8 years
Belarus: 7 years
Greece: 7 years
Iceland: 7 years
Norway: 7 years
Albania: 5 years
Belgium: 5 years
Bulgaria: 5 years
Czech Republic: 5 years
Finland: 5 years
France: 5 years
Ireland: 5 years
Kosovo: 5 years
Luxembourg: 5 years
Malta: 5 years
Netherlands: 5 years
Portugal: 5 years
Russia: 5 years
Sweden: 5 years
Ukraine: 5 years
United Kingdom: 5 years
Serbia: 3 years