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Certification work is carried out by attorneys registered as Notarial Services Attorneys with the Lawyers Council of Thailand under the Regulation of the Lawyers Council on Registration of Notarial Services Attorneys B.E. 2551. Licence numbers and personal data in the images below are redacted for privacy; originals can be verified in person.

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    Miss Anutaree

  • Notarial Services Attorney registration certificate — Mr. Jiraphan

    Mr. Jiraphan

  • Notarial Services Attorney registration certificate — Mr. Jirasak

    Mr. Jirasak

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    Mr. Patipan

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    Mr. Warawut

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    Mr. Wiwat

Issued by the Lawyers Council of Thailand · personal data partly redacted

Matching a name-change certificate against the passport spelling
Matching a name-change certificate against the passport spelling

Name change certificates: linking your old and current name across a document set

Quick answer

When the name on a degree, house registration or birth certificate differs from your current passport, a certified translation of the name or surname change certificate is what links the two records to one person. The translation keeps both the former and the new name exactly as printed.

Mismatched names are one of the most common reasons a set is returned for more documents, especially after a marriage or divorce. This article explains how to assemble the linking documents properly the first time.

What to prepare

  • Every name change and surname change certificate you have ever been issued
  • Marriage or divorce certificate, if the surname changed through marital status
  • Current passport data page
  • The underlying documents that still carry the former name, such as a birth certificate or degree
  • The checklist from the receiving authority

How the process runs

  1. 1Lay out the full chain of changesGather every certificate in date order so the path from the earliest name to the current one is continuous with no gap in the middle.
  2. 2Fix the spelling against the passportGive the team the English spelling exactly as it appears in the passport so every translation, for both the former and the current name, matches.
  3. 3Translate alongside the main setHave the name change certificates translated together with the main documents so terminology and spelling stay consistent across the whole set.
  4. 4Order the files before lodgingKeep each translation next to its original and order the files to match the checklist, so the reader can follow the name chain immediately.

When a linking document is needed

  • The degree carries a maiden surname
  • The birth certificate shows a given name that has since changed
  • A foreign document spells the name differently from the passport
  • The name changed more than once and the chain has a gap

Never harmonise the name inside the translation

A translation always mirrors its original. If the original carries the former name, so does the translation. Replacing it with the current name changes the substance of the document; the correct approach is to attach the name change certificate as the linking evidence.

If you would rather we checked the chain

Our team will review where the name chain breaks in your set and whether a further certificate has to be requested from the district office before translation begins. Send the whole set through LINE @NAATI for an initial review.

Things to watch

  • Do not send only the most recent certificate if the name changed several times
  • Do not let the English spelling differ between documents in the same set
  • Do not alter a name in the translation to match the passport without supporting evidence
  • Requirements differ by authority, so follow the checklist you were given

Frequently asked questions

Does every name change certificate have to be translated?

Generally yes, so the chain stays continuous. If a certificate in the middle is missing, the reader cannot connect the records and will ask for more documents.

The surname changed through marriage. Is the marriage certificate enough?

In many cases it links the records, but some authorities also want the formal surname change certificate. Prepare both where possible.

Should the translation show both the old and the new name?

It shows whatever the original shows, because the point of the document is to demonstrate that the former and current names belong to the same person.

How long does it take?

These are single page documents and are quick on their own, but translating them together with the main set keeps spelling consistent. Overall turnaround varies with the size of the set.

Let our team handle the whole set

We work as an adviser as well as a translation provider. Send your scans and the receiving body's checklist on LINE and we will review the set, map the order of every step, and tell you what still needs to be obtained before anything is lodged.

Ask us on LINE @NAATI

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Content reviewed August 2026. This article describes general process and is not legal or migration advice. Confirm current requirements with the receiving body.

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