Livre 5 : Famille

Article 1547Légitimation par le père, trois voies

Statutory text (Thai original)

เด็กเกิดจากบิดามารดาที่มิได้สมรสกัน จะเป็นบุตรชอบด้วยกฎหมายต่อเมื่อบิดามารดาได้สมรสกันในภายหลังหรือบิดาได้จดทะเบียนว่าเป็นบุตรหรือศาลพิพากษาว่าเป็นบุตร

Verbatim from the Royal Gazette / Office of the Council of State

English translation

A child born of the parents who are not married to each other is legitimate by the subsequent marriage of the parents, or by the registration made on application by the father, or by a judgment of the Court.

This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.

Firm annotation

Section 1547 is the path from s.1546 illegitimacy to full legal parent-child status. Route 1 (marriage) is automatic, registering marriage with the mother legitimates the child retroactively to birth. Route 2 (consensual registration) is done at the amphur, but it requires the consent of BOTH the child and the mother under s.1548, and that section sets no age threshold that dispenses with the child's consent. If the child and the mother do not appear before the registrar to consent, the registrar must notify them both, and if they neither object nor consent within sixty days of receiving the notice (extended to one hundred and eighty days if they are outside Thailand), the law presumes consent was NOT given. The presumption runs against the applicant, so silence does not help him. If the child or the mother objects that the applicant is not the father, or refuses consent, or is unable to give consent, registration requires a court judgment. The practical consequence is that the father of a young child who cannot yet consent for himself must normally use Route 3, not Route 2. Route 3 (court order) covers refusal and inability to consent alike; DNA evidence is typically required and the child's welfare is paramount. Foreign fathers use legitimation to obtain joint parental power, inheritance rights for the child, and immigration sponsorship opportunities.

High importance

Why this matters in practice

For lawyers: registration of paternity under section 1548 requires the consent of BOTH the mother and the child, and the section sets no age threshold that dispenses with the child's consent. If they do not appear before the registrar, the registrar notifies them, and silence for sixty days (one hundred and eighty if they are abroad) is presumed to be a refusal. Where the child or mother objects, refuses, or is unable to consent, registration requires a court judgment, so the father of an infant normally has to take the court route rather than the amphur route. Contested paternity requires DNA evidence. For clients: the amphur route is only open where both the mother and the child actually consent; if the child is too young to consent, or the mother refuses, a court action is needed.

Legislative history

Section 1547 has applied since the B.E. 2519 revision. The Marriage Equality Act (No. 24, B.E. 2567), in force 22 Jan 2025, extended the subsequent-marriage route to same-sex couples; a child born to a same-sex couple prior to or after the Act may be legitimated when the parents register their marriage.

  • legitimation
  • three routes
  • subsequent marriage
  • court order
  • paternity registration

Décisions de la Cour suprême interprétant cette section

  1. Arrêt de la Cour suprême n° 452/2553 (2010)

    Section 1547 provides that a child born to parents who were not married to each other becomes a legitimate child only where the parents afterwards marry, or the father registers the child as his, or a court gives judgment that the child is his. Conduct amounting to informal acknowledgement, such as letting the child use the father's surname and maintaining the child as a father maintains a child, is not a ground the law recognises and does not make the child legitimate. A man who has done no more than that is not the child's lawful father.

    The plaintiff sued for the return of her minor child and for an order restraining the defendant from further involvement with the child. The defendant relied on having acknowledged the child in fact: the child used his surname and he had maintained her as a father maintains a child. The Supreme Court held that section 1547 recognises only three routes by which a child born outside marriage becomes legitimate, namely the parents' subsequent marriage, registration by the father, or a judgment of the court, and that acknowledgement by conduct is not among them. None having occurred, the defendant was not the child's lawful father. The decision is about what does not amount to legitimation; it does not decide from what date legitimation takes effect.

    Lire la décision complète (deka.in.th)

  2. Arrêt de la Cour suprême n° 3019/2541 (1998)

    A child becomes the legitimate child of the father only by one of the three routes in section 1547: the subsequent marriage of the parents, registration of legitimation by the father, or a judgment of the court. Where none has been taken the child is not a legitimate child, and section 1562, which restricts a person's rights and must be construed strictly, does not bar him from suing the father.

    The plaintiff was the defendant's child, acknowledged in fact and using his surname, but the defendant and the plaintiff's mother never married. The Supreme Court held the plaintiff could become a legitimate child only through one of the three routes in section 1547 and none had been taken, so he was not a legitimate child. Since section 1562's prohibition on suing an ascendant restricts a person's rights and must be construed strictly, it applies only to a legitimate child, so the plaintiff had standing to sue his father. The judgment of the court of first instance was set aside and the case remitted for trial.

    Lire la décision complète (deka.in.th)

Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.

Cité dans 19 décisions de la Cour suprême (1971 à 2023)

Décisions de citation sélectionnées

Cette liste est sélectionnée automatiquement, en privilégiant les jugements qui reposent sur cet article plutôt que sur ceux qui se contentent de le citer lors du prononcé de la peine. Elle n'a pas encore été examinée par le cabinet.

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Sections qui apparaissent le plus souvent dans les mêmes jugements que celui-ci. Le chiffre correspond au nombre de décisions.

Calculé sur l'ensemble du corpus de 83 652 décisions de la Cour suprême du cabinet, de 1921 à 2026. Le décompte est exhaustif ; la plage d'années indiquée élimine les valeurs aberrantes rares afin de refléter la répartition réelle des citations. Ces chiffres sont calculés par nos soins et ne constituent pas des statistiques officielles de la Cour. Comment nous les comptons et ce que nous avons mesuré

Foire aux questions

Si j'épouse l'autre parent de mon enfant après sa naissance, l'enfant devient-il automatiquement mon enfant légitime ?

Oui. Conformément à l'article 1547(1), lorsque des parents non mariés se marient ultérieurement, l'enfant devient l'enfant légitime des deux parents à compter de la date de ce mariage. L'enfant acquiert la pleine propriété successorale des deux parents et a droit à une pension alimentaire de leur part.

Guides connexes sur ThaiLawOnline

Citer cette section

  • Citation simple Code civil et commercial, art. 1547 (Thaïlande)
  • Citation académique Civil and Commercial Code (Thailand), s. 1547. ThaiLawOnline, https://www.thailawonline.com/fr/thai-civil-code/section-1547/ (accessed 30 août 2026).
  • Citation thaïlandaise Article 1547 du Code civil thaïlandais
  • Lien permanent https://www.thailawonline.com/fr/thai-civil-code/section-1547/
  • Intégrer sur votre site <blockquote cite="https://www.thailawonline.com/fr/thai-civil-code/section-1547/"><p>Un enfant né de parents non mariés est légitime par le mariage ultérieur des parents, ou par l&#039;enregistrement effectué à la demande du père, ou par un jugement du tribunal.</p><footer>Code civil et commercial, art. 1547 (Thaïlande) : <a href="https://www.thailawonline.com/fr/thai-civil-code/section-1547/">ThaiLawOnline</a></footer></blockquote>

The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.

Ce document a une vocation pédagogique et ne constitue pas un avis juridique. Veuillez consulter un avocat thaïlandais qualifié avant de vous fier à toute disposition de ce document.

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