International adoption country guide
Thailand: adoption records and family tracing
Practical guidance for adoptees based in the UK who were adopted in Thailand, were born there and adopted in the UK, or have a birth parent from there.
Research last refreshed: September 2026
Ask the Adoptee Rights Assistant
Start by identifying the records and rules that apply
Transliteration and name changes can make searches difficult; province and district are important.
The official Thai guidance expressly contemplates adoptees living overseas and permits requests through the receiving-country central authority/cooperating agency or Thai adoption channels. Independent genealogy can begin from the UK, but Thai language, province/district detail and house-registration information are often important.
Check the current procedure before applyingThis guide explains the likely process, but forms, contact details, eligibility and access rules can change. Check the linked source before sending identity documents or paying a fee.
Choose the situation that describes you
Adopted in Thailand
What applies: First establish the date and place of the legal adoption in Thailand, and identify the original birth/civil, adoption, court, agency or welfare records separately.
How to look for records: Start with Thai adoption authority/agency records and the civil registration trail. Keep the original Thai record process separate from UK adoption/recognition records.
How to look for family: Use Thailand's Child Adoption Center birth family search process where the case falls within its records. Overseas adoptees may request a search through the central authority in the adoptive country/cooperating agency, the Thai Child Adoption Center, or relevant Thai adoption agency. Supply as much original documentation as possible: Thai adoption registration, passport, birth certificate, house registration, child's background report, photographs and any other adoption-era material. Once names and locality are verified, use Thai civil/household registration and genealogy resources to extend the family line.
Important: Do not assume that access to one Thailand record repository gives access to the whole adoption file. Historic law and record survival may differ from the current adult process.
Born in Thailand and brought to the UK to be adopted
What applies: First establish whether the legal adoption was completed in Thailand or in the UK. If that is unknown, keep both procedures open rather than assuming where the adoption order was made.
How to look for records: Use the Thailand birth/civil and before adoption record procedures described for this country, while separately tracing the UK adoption/receiving-agency, local authority, court and immigration trail.
How to look for family: Use Thailand's Child Adoption Center birth family search process where the case falls within its records. Overseas adoptees may request a search through the central authority in the adoptive country/cooperating agency, the Thai Child Adoption Center, or relevant Thai adoption agency. Supply as much original documentation as possible: Thai adoption registration, passport, birth certificate, house registration, child's background report, photographs and any other adoption-era material. Once names and locality are verified, use Thai civil/household registration and genealogy resources to extend the family line.
Important: The original birth-country record and the later UK adoption/recognition record are different sources. Nationality of the adopters does not determine where the original birth record is held.
One parent was from Thailand
What applies: Do not process this as an intercountry-adoption record case unless the user's own adoption occurred there. Start with the verified identity of the parent and the strongest known place/date in Thailand.
How to look for records: Use civil registration, archives and genealogy resources for Thailand once the parent's identity and locality are established. Adoption-specific authorities are relevant only if the parent's own adoption/history makes them so.
How to look for family: Use Thailand's Child Adoption Center birth family search process where the case falls within its records. Overseas adoptees may request a search through the central authority in the adoptive country/cooperating agency, the Thai Child Adoption Center, or relevant Thai adoption agency. Supply as much original documentation as possible: Thai adoption registration, passport, birth certificate, house registration, child's background report, photographs and any other adoption-era material. Once names and locality are verified, use Thai civil/household registration and genealogy resources to extend the family line.
Important: A parent being from this country does not by itself create an entitlement to adoption records. Living-person privacy and civil registration access rules may restrict what can be obtained.
Records and family finding
Start with records
Start with Thai adoption authority/agency records and the civil registration trail. Keep the original Thai record process separate from UK adoption/recognition records.
Looking for family
Use Thailand's Child Adoption Center birth family search process where the case falls within its records. Overseas adoptees may request a search through the central authority in the adoptive country/cooperating agency, the Thai Child Adoption Center, or relevant Thai adoption agency. Supply as much original documentation as possible: Thai adoption registration, passport, birth certificate, house registration, child's background report, photographs and any other adoption-era material. Once names and locality are verified, use Thai civil/household registration and genealogy resources to extend the family line.
DNA
Use DNA as a separate source of evidence, not as proof by itself. Prefer multiple matches/shared match analysis plus documentary evidence. Country-specific DNA programmes are listed where verified.
Peer support
ICAV lists Back to the Roots Thailand and Thai Adoptees Worldwide as Thailand-origin adoptee peer/search leads. These should be checked for current information before referral.
Practical next steps
If you have no namesGather all Thai adoption-era documents first, especially the Child's Background to be Adopted, Thai birth certificate, house registration, passport, adoption registration and photographs, then use the Child Adoption Center search process.
If you have a name or placeUse the verified name plus place/date to move into civil registration, archives, genealogy databases, local history and specialist tracing processs.
If the search has stalledIf the official search produces no match, re-check transliteration, Thai name spellings, province/district, institution/agency, household registration and finder information; then consider peer/search organisations and DNA.
Verified sources and resources
Official services and independent or adoptee-led resources are shown separately. Check current eligibility, security, costs and capacity before supplying personal information.
Adoptee-led peer and search resources
Lists Back to the Roots Thailand and Thai Adoptees Worldwide
Things to check: Each group must be checked for current information for current activity and services
Other verified resources
Family tree and historical-record searching
Things to check: Coverage must be checked by locality; not an adoption tracing service
Official birth family search process and document checklist for adoptees living overseas
Things to check: PDF guidance should be checked for current information for current forms/contact details
This country guide provides general information, not legal advice or a tracing service. Records and family finding across borders can involve privacy, consent and personal safety considerations. Verify the current official procedure before acting.
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