Notary Public in Thailand Explained: What a Notarial Services Attorney Can and Cannot Do
8 min read · Updated 2026-08-10
In short
Thailand certifies documents through Notarial Services Attorneys licensed by the Lawyers Council of Thailand, not through a common-law notary public. Their certification covers signatures, copies, oaths and identity — it does not by itself make a document acceptable abroad, which usually needs consular legalisation on top.
Foreign clients often arrive asking for a 'notary public' and are surprised that Thailand does not have that office. What Thailand has instead is the Notarial Services Attorney: a practising lawyer specially licensed under the Lawyers Council of Thailand regulation of B.E. 2546 to perform notarial acts. Understanding the difference matters, because the wrong assumption about what a Thai seal proves is the most common reason a file is rejected overseas.
Who is allowed to notarise in Thailand
Only a lawyer who holds a current licence to practise and has completed the Lawyers Council notarial services training may act. The certification carries the lawyer's licence number and seal, and the Council maintains the register that a foreign authority can check. A translation agency, a shop offering 'certified copies', or a company secretary cannot substitute for this.
What the certification actually proves
A notarial certificate attests to a fact the attorney observed: that a named person signed in their presence, that a copy corresponds to the original shown, that an oath or affirmation was administered, or that a person's identity was verified against an official document. It does not certify that the underlying statement is true, nor that the issuing authority's own record is genuine.
Where the chain usually continues
Most receiving authorities abroad want proof that the Thai signature itself is genuine. That comes from the Department of Consular Affairs of the Thai Ministry of Foreign Affairs, and — depending on the destination — from that country's embassy in Bangkok afterwards. Thailand's accession to the 1961 Hague Apostille Convention enters into force on 28 February 2027; until then the consular route remains the working chain.
Typical documents that need a notarial act
Powers of attorney for property or banking, affidavits of single status, parental consent for a child's travel, corporate board resolutions and certificates of incumbency, sponsor or support letters for visa files, academic transcripts sent to credential evaluators, and copies of passports for account opening abroad.
Common mistakes that cost a second round
Signing before you arrive (the attorney must witness the signature), separating stapled pages after certification, using a name spelling that differs from the passport, and translating first when the destination requires the original to be certified first. Each of these is fixable, but only by repeating the step.
Frequently asked questions
Is a Thai notarial certificate the same as a US or UK notary public seal?
Functionally similar but constituted differently. Thailand's act is performed by a licensed attorney under the Lawyers Council regulation rather than by a separately commissioned notary, and most foreign authorities accept it once the signature has been legalised through the Department of Consular Affairs.
Do I have to attend in person?
For any act that certifies a signature, an oath, or your identity, yes — the attorney must observe it. Certified copies of documents you supply, and preparatory drafting, can be arranged in advance so the appointment itself is short.
Can a notarial act be done in English?
Yes. Certificates are routinely issued in English, and bilingual wording can be used where the receiving authority expects both languages.
Can your team handle the whole process for me?
Yes. Our practitioners review the file before submission, deal with the Thai authorities and the destination embassy on your behalf, and report back at each stage. Message LINE @Thainotary or call 094-895-8999 with a photo of what you already hold and the destination country, and we will map the correct chain for your case.
What should I prepare before the first consultation?
A scan or clear photo of every document you already have, the destination country and receiving authority, and the date you need the file ready. From that we can list the missing items, the correct order of certification, and an approximate window before any work starts.
Would you rather we handled it?
Our practitioners review the file, deal with the authorities and report at each stage. Call 094-895-8999 or message LINE @Thainotary.