Argentina dual citizenship: can you keep another passport?

Argentina's migration authority explicitly regulates dual nationality and separates cases involving countries with a dual-nationality agreement from those without one. The official framework does not present acquiring Argentine citizenship as an automatic requirement to surrender every other nationality.

A third citizenship does not have a separate procedure on the Argentine information page. The practical limit may instead come from the laws of the other countries involved, so every nationality must be checked separately.

The current Argentine Citizenship Law sets the conditions for naturalization but does not list renouncing an existing citizenship among the ordinary requirements. That does not guarantee that your original country will let you keep its nationality after voluntarily becoming Argentine.

Before applying, check the official nationality rules of every country whose passport you hold. Some countries permit multiple citizenship automatically, while others require notice, prior permission or may treat voluntary naturalization as a reason for loss.

Under the updated text of Law 346, the ordinary route is for adults who can prove two years of continuous and legal residence in Argentina immediately before applying. The law defines continuous residence strictly: the person must have remained in Argentina for the entire two-year period without travelling abroad.

Since October 2025, the ordinary application starts digitally through Dirección Nacional de Migraciones rather than through the previous federal-court filing route. Requirements and the online process can change, so confirm them directly with Migraciones before relying on a timeline.

• Be at least 18 years old
• Hold valid temporary or permanent residence
• Complete two continuous legal years without leaving Argentina
• Start the naturalization request through Migraciones

Argentina lists agreements involving Chile, Colombia, Ecuador, El Salvador, Spain, Honduras, Italy, Nicaragua, Norway, Panama and Sweden, plus a limited historical arrangement with the United States. These agreements can affect how a person is treated when entering, leaving or resuming residence in Argentina.

An agreement is not the same as a universal permission to use either passport in every situation. Your residence, destination and the way the second nationality was acquired can change which documents are required.

Argentine residents who also hold a nationality from a country without an agreement are generally expected to leave and re-enter with a valid Argentine travel document. Different rules may apply to non-residents, short visits and agreement countries.

Before each trip, check the current Migraciones guidance for your exact combination of nationality and residence. Carrying both valid passports and your Argentine DNI can prevent avoidable problems, but it does not replace the document legally required for departure or re-entry.

Treat citizenship and travel planning as two connected but separate tasks. First verify that every country involved permits the combination; then confirm that your Argentine residence and travel history meet the current naturalization rule.

• Check the citizenship-retention rules of your current countries
• Review every exit from Argentina before calculating the two-year period
• Keep names and birth details consistent across all passports
• Save residence records and request a migration-movements certificate if needed
• Recheck the official law and Migraciones instructions before applying