The Non-Immigrant O visa based on Thai marriage — what should you know about translation and certification?

The subject of this page is “The Non-Immigrant O visa based on Thai marriage”, so the answer below starts with what this case actually needs before setting out the general rules. High-resolution photos of seals and signatures help when the destination asks for re-verification. Record the reference number of each certification layer; it is the fastest way to trace status. If any requirement is still unclear, send a sample image to the receiving body before producing the full set. Before starting, check that names are spelled identically to the passport or ID card on every page, then confirm with the receiving body whether it wants an original, a certified copy or a certified translation, then count the number of certified sets needed before work starts, because extra sets restart the certification steps. For documents going abroad, include international shipping time in the plan. Plan the schedule with room for at least one review cycle at the receiving office. The terms that frame this page are Non-Immigrant · visa · based · Thai. The point to fix before starting is the real deadline, so the steps can be scheduled backwards from it. The condition most often overlooked is that name spelling must match across every document in the set. Supporting documents issued abroad — police clearance, marriage and birth certificates, qualifications or financial papers — normally need translation into Thai or English by an accountable translator and the certification the receiving office specifies, usually legalisation at the Department of Consular Affairs and/or the issuing country's embassy. On Apostille: Thailand deposited its instrument of accession on 30 June 2026, but the Convention is not yet in force for Thailand, so the working route is still consular legalisation — the Department of Consular Affairs first, then the destination embassy. ILC's scope is documentation — certified translation, notarial signature certification and running legalisation at the Department of Consular Affairs or an embassy. We are not an immigration authority and cannot guarantee any visa decision, which rests solely with the competent officer. Fees and scheduling depend on the number of documents, the source language, which authority must certify them and the destination country; we confirm scope in writing before starting. Send the checklist you were given, the applicant's nationality and the post or office you will file with via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th