1. A person born to a legal Thai father or mother, whether born inside or outside the Kingdom of Thailand, is considered a Thai national by birth.

2. The first and last name of the applicant must exactly match the name on the U.S. birth certificate and must comply with Thai law.

3. The applicant’s last name must be either the legal last name of the father or the mother, with the spelling matching the official Thai documents.

4. The person reporting the birth must register online and submit the required documents in person for an interview at the Consular Section of the Royal Thai Embassy in Washington, D.C. only.

5. In cases where the applicant for a Thai birth certificate is over 20 years old, both the person reporting the birth and the applicant must appear in person at the Royal Thai Embassy in Washington, D.C. to submit original documents, certify copies, and attend an interview with embassy staff.

1. Get the U.S. birth certificate certified by the Secretary of State First, you need to have the U.S. birth certificate certified by the Secretary of State of the state where the certificate was issued. You can find more information about the appropriate office and how to send the document for certification : Click here to find more information

2. Get the certified birth certificate authenticated by the U.S. Department of State After it is certified by the state, send the document to the U.S. Department of State (Office of Authentications) for federal authentication. Visit the U.S. Department of State website to find instructions on how to send your documents for this step : U.S. Department of State website (Office of Authentications).

3. Submit an online application for a Thai birth certificate Once you have the birth certificate certified by both the state and federal offices, register online to request a Thai birth certificate. You must also upload all required supporting documents for officials to review.

4. Wait for document review and appointment scheduling After your documents are reviewed and confirmed to be complete, the embassy staff will contact you to schedule an appointment for in-person document submission and an interview.

5. Receive the Thai birth certificate by mail After the birth certificate is issued, the embassy will mail you two copies. You must sign one and send it back to the embassy.

Note: If you do not return the signed copy, the Thai birth certificate will be considered incomplete.

1. U.S. Birth Certificate authenticated by the Secretary of State and the U.S. Department of State, along with 1 copy.

2. Color Photos – Two (2) color photos of the applicant, size 2 x 2 inches.

3. Hospital Certificate and Newborn Weight Record – With 1 photocopy. (Required only if the U.S. birth certificate does not state the name of the hospital and/or birth weight.)

4. U.S. Passport and Local U.S. ID of the applicant – With 1 photocopy. (If the applicant is over 15 years old, an original official photo ID must be provided. Photocopies are not accepted.)

5. U.S. local identification cards of both parents, such as Driver’s License or State ID, with 1 photocopy each.

6. Valid Thai National ID cards of both father and mother, with 1 photocopy.

7. Valid Thai passports of both father and mother, with 1 photocopy.

8. Marriage certificate, with 1 photocopy.

9. Application Forms (all downloadable from provided links or registration email):

• Thai Birth Certificate Request Form (downloadable via email used for online registration)
• Legalization Request Form for Thai Birth Certificate — [Click here to download]
• Mother’s Statement (in case the father is a foreign national) — [Click here to download]
• Mother’s Statement (if parents are not legally married) — [Click here to download]
• Notary Public for Signature Form — [Click here to download]

10. Return Envelopes – Two (2) USPS Priority Mail envelopes with $10.45 postage each. Clearly write your name, address, and phone number on the envelopes. To prevent loss, each envelope must have a tracking number.

Note:

• The Embassy will send two (2) Thai birth certificates to the person notifying the birth. The notifying person must sign in the “Signature of notifying person” section and return one (1) signed birth certificate to the Royal Thai Embassy immediately for verification and record-keeping. **If the signed birth certificate is not returned, the application will be considered incomplete.**

When all documents are complete, the processing time is approximately 15 business days.