Registries (IRN)PDF form

Application for Change of Sex and First Name for Persons Aged 18 and Over (Requerimento de Mudança da Menção do Sexo e do Nome Próprio – Maiores de Idade)

Blank application for an adult of Portuguese nationality to request a change to the sex entry and first name in the civil register.

What it is for

Changing the sex entry in the civil register
Changing your first name to one that matches your gender identity

Example (fictitious). Titus Gorila, aged 27, wants the civil register to reflect their gender identity.

What it is

This is the IRN (Institute of Registries and Notary) application, for persons of full age, to change the sex entry and first name on the birth record. Portuguese nationality is required. The form is only the application and does not cover changes to other documents, which follow after the registry update.

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 provided blank; the applicant fills it in and signs it personally. Please confirm with the registry office which supporting documents are required and the applicable conditions. We do not submit the application or guarantee its approval.

Frequently asked questions

Can I use this form without Portuguese nationality?

It is not the appropriate form. The application requires Portuguese nationality, so please check your situation before proceeding.

Does the application automatically change my Citizen Card (Cartão de Cidadão)?

The change is made first in the civil register. Identity documents are updated afterwards, as a separate step.