Professional Services · Guide

Notary Service Thailand: Official Document Certification for Foreign Use

Signature witnessing, certified true copies, affidavits, and document legalization for documents used in Thailand and overseas.

Nathee Legal Firm Co., Ltd. — Bangkok, Thailand

Many foreign nationals are surprised to learn that Thailand does not have a Notary Public system in the same form found in common-law countries. Instead, notarial functions are performed by licensed lawyers who are registered as Notarial Services Attorneys with the Lawyers Council of Thailand.

Our English-speaking notarial services attorneys provide official certification, signature witnessing, and document authentication for individuals and businesses, both for use in Thailand and for legalization abroad.

What a Notary Does in Thailand

A Notarial Services Attorney in Thailand can perform the official acts commonly expected from a notary, including:

  • Witnessing signatures and verifying the identity of signers
  • Certifying true copies of original documents
  • Preparing and witnessing affidavits and statutory declarations
  • Authenticating powers of attorney
  • Notarizing documents for overseas use
  • Preparing notarial certificates

When You Need Notarial Services

Foreign nationals commonly require notarial services for:

  • Immigration and visa applications
  • Overseas property transactions
  • Banking and account opening abroad
  • Corporate documents for foreign jurisdictions
  • Marriage and family matters overseas
  • Inheritance and probate documents
  • Affidavits of marital status, residence, or identity
  • Authentication of academic and professional credentials

International Use: Legalization and Apostille

A document notarized in Thailand will often require further legalization before it is accepted in another country. The typical process is:

  • Notarization by a Notarial Services Attorney
  • Authentication by the Department of Consular Affairs, Ministry of Foreign Affairs
  • Legalization at the embassy or consulate of the destination country

Thailand is not a party to the Apostille Convention, so documents intended for Apostille countries generally still require the full embassy legalization chain. We coordinate the entire process on your behalf.

Our Notarial Services

Signature Witnessing

We verify the identity of the signer and witness the execution of documents in person, issuing a notarial certificate that confirms the signature was given before us.

Certified True Copies

We compare copies against original documents and certify them as true copies, accepted by many banks, embassies, and government offices.

Affidavits and Statutory Declarations

We prepare and witness affidavits and statutory declarations, ensuring the wording meets the requirements of the receiving authority.

Power of Attorney Certification

We draft, witness, and notarize powers of attorney for use in Thailand and overseas, including those required by the Land Office for property transactions.

Legalization Coordination

We manage the full legalization chain — from notarization through Ministry of Foreign Affairs authentication to embassy legalization — so your document is ready for use abroad.

What to Bring

  • Your passport or government-issued identification
  • The original document to be notarized or copied
  • Any instructions or wording provided by the receiving authority
  • Details of the country where the document will be used

Why Choose Our Notarial Services

  • Licensed Notarial Services Attorneys registered with the Lawyers Council
  • English-speaking service for foreign clients
  • Clear fees disclosed before the work begins
  • Full legalization coordination handled for you
  • Convenient appointments in central Bangkok
  • Confidential handling of personal and corporate documents

Frequently Asked Questions

Is a Thai notarization valid overseas?

A Thai notarization is valid overseas once it has been authenticated by the Ministry of Foreign Affairs and legalized by the destination country's embassy. We arrange the full chain for you.

Do you notarize documents in English?

Yes. We notarize documents in English and can prepare bilingual versions or coordinate certified translations where the receiving authority requires Thai.

Can you certify a copy without the original?

No. To certify a true copy we must compare it against the original document at the time of certification.

Contact Our Notarial Services Attorneys

If you need a document notarized, certified, or legalized for use in Thailand or overseas, our English-speaking Notarial Services Attorneys are ready to assist.

Contact us today to schedule an appointment or request a quotation for your notarial matter.

The information provided on this website is for general informational purposes only and does not constitute legal advice. Legal rights, procedures, and outcomes depend on the specific facts and circumstances of each matter. References to international or cross-border matters do not constitute advice on foreign law unless expressly stated. Please consult a qualified Thai lawyer for advice specific to your situation.

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