Name Meaning & Legal Status · Portugal
Sebastian Name: Meaning, Origin & Portugal Legal Status
Showing legal status, local spelling and registration process for Portugal specifically. Each of the 7 country pages for Sebastian contains different data — see the comparison table below.
🇵🇹 Sebastian — Check Required in Portugal
Sebastian may require additional verification in Portugal. Should appear on the Vocabulário Onomástico (official list). Foreign-origin names may need proof of use or adaptation (e.g. Mateus instead of Mateo).
How Sebastian compares across 7 European countries
Each row is a different country page for Sebastian. Your current page (🇵🇹 Portugal) is highlighted. Click any other row to switch countries.
What does the name Sebastian mean?
The name Sebastian means "Venerable, revered (from Sebastos)". It is of Greek/Latin origin and is most commonly given to boys across Europe.
Pronunciation in Portuguese: seh-bahsh-tee-OW (Sebastião). Pronunciation varies slightly by region, but this is the form most commonly heard in Portugal.
Is Sebastian approved in Portugal? Sebastian may require additional verification in Portugal. Read on for the full origin, Portuguese spelling variants, popularity ranking, and the registration process at the IRN (Instituto dos Registos e do Notariado).
Origin
Greek/Latin
Meaning
Venerable, revered (from Sebastos)
Popularity in Portugal
Outside top 30
Portuguese spelling
Sebastião
Authority
IRN
Deadline
20 days after birth
Is Sebastian approved in Portugal?
Sebastian may require additional verification in Portugal. Should appear on the Vocabulário Onomástico (official list). Foreign-origin names may need proof of use or adaptation (e.g. Mateus instead of Mateo).
The name Sebastian: origin and meaning
Sebastian is a name of Greek/Latin origin, meaning "Venerable, revered (from Sebastos)". It has travelled across Europe for centuries — its earliest bearer in the Christian tradition is Saint Sebastian (3rd century Roman martyr, patron of athletes), and in modern times it has become widely recognised through cultural figures such as Sebastian Vettel (German F1 driver), Johann Sebastian Bach (composer).
In Portugal, the name connects to Saint Sebastian (3rd century Roman martyr, patron of athletes), which keeps it firmly embedded in the Catholic naming tradition and the local saints' calendar.
Popularity of Sebastian in Portugal
A familiar but less frequent choice in Portugal — not currently in the top 30, which can actually be an advantage for parents seeking a timeless name without over-exposure.
Our database covers approximately 3,500 names recorded in Portugal. You can cross-check Sebastian against this full dataset — along with naming patterns in the 24 other European countries we track — using our free name checker.
Portuguese spelling and variants of Sebastian
In Portugal, the name is most often written as Sebastião. This is the form recorded in the civil register.
Naming rules in Portugal
Portugal regulates baby names through the IRN (Instituto dos Registos e do Notariado) under the Vocabulário Onomástico (official positive list). Portugal operates one of the stricter naming systems in Europe — officials check proposed names against an approved list or a statutory set of rules, and unusual names may need formal review before registration.
For the name Sebastian specifically: Should appear on the Vocabulário Onomástico (official list). Foreign-origin names may need proof of use or adaptation (e.g. Mateus instead of Mateo).
Deadline
20 days after birth
Processing
1-15 days
Fee
Free (€10 if outside list)
Appeal to
Conservador dos Registos Centrais
How to verify before registering
- Use our free checker — verify Sebastian against our database of names actually registered in Portugal.
- Call your local IRN (Instituto dos Registos e do Notariado) — Registrars can confirm whether Sebastian has been accepted locally before you book the registration appointment. This is especially helpful when using a rare spelling.
- Bring supporting evidence — If the name is unusual, prepare documents: a parent's passport showing the same name, a prior birth certificate, or a reference to a historical/religious figure. This makes a difference if the case escalates.
- Read the full legal guide — See our complete article on baby name laws in Portugal for the full legal background.
Similar boy names approved in Portugal
If Sebastian is not exactly what you are looking for, these boy names share a similar European tradition and are commonly accepted in Portugal:
Frequently asked questions about Sebastian
What does the name Sebastian mean?
Sebastian means "Venerable, revered (from Sebastos)". It is of Greek/Latin origin and is traditionally a boy's name. The name has been used across Europe for centuries and is associated with Saint Sebastian (3rd century Roman martyr, patron of athletes).
Can I legally register Sebastian in Portugal?
Likely yes, but it may require verification. Should appear on the Vocabulário Onomástico (official list). Foreign-origin names may need proof of use or adaptation (e.g. Mateus instead of Mateo). We recommend checking with the IRN (Instituto dos Registos e do Notariado) before the registration deadline of 20 days after birth.
What is the Portuguese spelling of Sebastian?
The most common Portuguese form is Sebastião. Accents and diacritics must be registered exactly as written on the birth certificate — they cannot be added later without a formal name change.
How long does it take to register Sebastian in Portugal?
Standard registration at the IRN (Instituto dos Registos e do Notariado) is normally processed in 1-15 days. Parents must register the birth within 20 days after birth. The standard fee is Free (€10 if outside list).
What can I do if the registrar rejects Sebastian?
You can appeal the decision before the Conservador dos Registos Centrais. In practice, parents often submit historical evidence (saints, literary figures, prior registrations) or agree on a slight adaptation that preserves the name's sound.
Check Sebastian across all 25 European countries
See where Sebastian is accepted — useful for multicultural families or anyone planning to live abroad.
Check Sebastian →Compare Sebastian with the other 6 European countries
The data for Sebastian is different in each country — different authority, different deadline, different local spelling. Open any of the 6 sibling pages below:
✅ Approved
See Sebastian in Spain →
✅ Approved
See Sebastian in France →
✅ Approved
See Sebastian in Germany →
✅ Approved
See Sebastian in Italy →
✅ Approved
See Sebastian in Iceland →
✅ Approved
See Sebastian in Sweden →
Related resources
All approved names in Portugal
Browse the full 3,500-name database
Top 30 names in Portugal
See current popularity rankings
Baby Name Laws in Portugal
Complete legal guide
How to register a baby name in Europe
Step-by-step cross-country guide
Last updated: May 2026. Information is provided for orientation only and does not constitute legal advice. Always confirm with the IRN (Instituto dos Registos e do Notariado).