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Changing your name in Peru: requirements, effects, and who can challenge it

Short answer

In Peru, no one can change their name or surnames just by wanting to: the Civil Code requires a justified reason plus judicial authorization, which must also be published and registered. The change doesn't alter your civil status or prove filiation, and if it harms someone, that person can challenge it in court.

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Peruvian State portal (gob.pe)

Checked 1 Oct 2026Next review 19 Mar 2027

By Gyason · verified 1 Oct 2026

PeruviansForeign residents

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A name is a right, but changing it isn’t just up to you

Article 19 of the Civil Code states that “every person has the right and the duty to bear a name. This includes surnames.” A name isn’t just a label: it’s an element of your identity that the law protects, but also carefully regulates when it comes to changing it.

What the law requires to change your name

Article 29 is the central rule here: “no one may change their name or add to it, except for justified reasons and through judicial authorization, duly published and registered.” This means three concrete things:

Simply preferring another name isn’t enough: you need a reason a judge would consider justified.
The change isn’t resolved at an administrative office: it requires judicial authorization.
That authorization, to take effect, must be published and registered.

The same Article 29 adds that the change or addition of a name extends, where applicable, to the spouse and minor children — meaning it isn’t a change that stays isolated to the person requesting it.

The name change doesn’t alter your family situation

A common worry is that changing your name might alter a person’s filiation or civil status. Article 30 clears that up: “the change or addition of a name does not alter the civil status of the person who obtains it, nor does it constitute proof of filiation.” In other words, it’s a change of identification, not a change of family ties or civil status.

The change can be challenged

Judicial authorization doesn’t make a name change unchallengeable. Article 31 allows “the person harmed by a change or addition of a name may challenge it judicially.” This protects, for example, someone who ends up confused with the person who adopted the new name, or whose rights are affected by that change.

A pseudonym also gets protection

Article 32 extends similar protection to people known by a pseudonym: when it “acquires the importance of a name, it enjoys the same legal protection given to one.” This doesn’t replace the name-change procedure, but it shows that the law also protects the identity by which a person is publicly recognized, even when that isn’t their legal name.

In practice

Before starting any process, keep in mind that changing your name isn’t a counter procedure: the law requires a justified reason and judicial authorization that must be published and registered. If you have a spouse or minor children, consider that the change may extend to them. And if someone is harmed by your name change, the law gives them the option to challenge it in court, so the reason behind your request should be solid and verifiable.

Is this a RENIEC error rather than a name change?

If what you want isn’t to adopt a different name but to fix data that was always wrong, that’s a different and simpler process: see correcting your data at RENIEC.

How to file

Confirm you have a justified reasonArticle 29 doesn't allow a name change based on simple preference: it requires a reason a judge would consider justified.
Keep in mind you need judicial authorization, not just an administrative procedureThe name change must be judicially authorized, and that authorization must also be published and registered to take effect.
Consider who else the change extends toIf you have a spouse or minor children, the name change can extend to them, under Article 29.
Remember the change doesn't prove or modify your filiationArticle 30 is clear: changing your name doesn't alter your civil status or serve as proof that you're a specific person's child.
Keep in mind the change can be challengedIf your name change harms someone — for example, by creating confusion with another person or affecting a third party's right — Article 31 lets them challenge it in court.

What people fail to ask in time

Did you know a police identity check also has rules and time limits you should know about?

Find out before it matters →

What most people believe — and what the law says

The belief

I can change my name just by going to Reniec and asking.

The law

Article 29 is explicit: changing your name requires a justified reason and judicial authorization, which must also be published and registered. It's not a simple administrative counter procedure.

The belief

If I change my name, it also changes my family situation or my filiation.

The law

Article 30 says the opposite: changing your name doesn't alter your civil status or serve as proof that you're someone's child. It's a change of identification, not of civil status or family ties.

The belief

Once a name change is authorized, no one can question it.

The law

Article 31 lets anyone harmed by that change challenge it in court, even after it's been registered.

The belief

If I change my name, my spouse and children aren't affected.

The law

Article 29 itself states that the change extends, where applicable, to the spouse and minor children.

Frequently asked questions

What three concrete requirements do I need for my name change to take legal effect?

You need a reason a judge would consider justified, judicial authorization (a simple administrative counter procedure isn't enough), and that authorization published and registered. If any of the three is missing, the change has no effect.

If I'm known by a pseudonym, does that replace the name-change process?

No. Article 32 protects a pseudonym once it acquires the importance of a name, but that legal protection is separate from the procedure in Article 29. Using a pseudonym doesn't change your legal name or excuse you from the judicial process if you want to change it formally.

Who can challenge my name change, and in what situation would they do it?

Anyone harmed by the change, under Article 31. For example, someone who ends up confused with you because you now share the same name, or a third party whose rights are affected by the change.

What I want is to fix a spelling error on my DNI, not adopt a different name — is this the right process?

No. If the data was always misspelled, that's a different and simpler process: correcting your data at RENIEC. The name change under Article 29 is for adopting a name different from the one you have, with a justified reason and judicial authorization.