According to the new Citizenship Act, since June 27, 2024, anyone who wants to be naturalized in Germany can now retain their previous citizenship under German law.
However, the country of origin must also allow dual citizenship. In some countries, such as Austria, China, India and South Korea, citizenship is automatically lost if you naturalize in another country.
A detailed list of countries with which dual citizenship is not possible can be found here.
Tip: Before starting the naturalization process, always check whether the previous citizenship may be retained under foreign law. You can inquire about this at foreign missions, for example. German lawyers are generally unable to provide information on foreign legal issues.