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Registries (IRN)PDF form

Portuguese Nationality Through Legal Residence in Portugal (Nacionalidade portuguesa por viver legalmente em Portugal)

Blank form to apply for naturalisation based on legal residence in Portugal. Comes with an explanation of the fields.

Official form: Modelo 6.1 · Instituto dos Registos e do Notariado

What it is for

  • Applying for Portuguese nationality by naturalisation
  • Presenting legal residence as the grounds for the application
Example (fictitious). Titus Gorila has lived legally in Portugal for several years, works in Braga and wants to become Portuguese.

What it is

This is IRN Form 6.1 for people applying for nationality by naturalisation on the grounds of legal residence. It gathers the applicant's personal and residence details. It is not the form for descendants of Portuguese citizens, and the application alone does not mean approval.

What you receive

You receive the official blank PDF form, with an explanation of what it is for. The Titus assistant answers your questions about filling it in. You can combine it with other documents in the same request, with a single payment. We do not ask for any password for forms.

Titus assistant
Do you have questions about this form? Ask, for example, what a field means or who should sign it.

The assistant explains; it does not fill in or submit anything on your behalf. Do not type passwords or third parties' data.

Things to note

The form is supplied unfilled; the applicant fills it in and signs it. The requirements, such as length of residence and proof of integration, should be confirmed with the competent office. Titus Docs does not submit the application or guarantee that it will be accepted.

Frequently asked questions

How long do I need to have been resident?

The law sets conditions that may change. Please check the current requirement with the registry office; the Titus assistant helps you understand what the form asks, but does not decide eligibility.

Can I apply if my status is irregular?

The form is based on legal residence, so that requirement must be met.

Related documents

Text reviewed in November 2026.