Criminal Procedure Code

Section 33: Consolidating the same case

Statutory text (Thai original)

คดีอาญาเรื่องเดียวกันซึ่งทั้งพนักงานอัยการและผู้เสียหายต่างได้ยื่นฟ้องในศาลชั้นต้นศาลเดียวกันหรือต่างศาลกัน ศาลนั้น ๆ มีอำนาจสั่งให้รวมพิจารณาเป็นคดีเดียวกัน เมื่อศาลเห็นชอบโดยพลการหรือโดยโจทก์ยื่นคำร้องในระยะใดก่อนมีคำพิพากษาแต่ทว่าจะมีคำสั่งเช่นนั้นไม่ได้ นอกจากจะได้รับความยินยอมของศาลอื่นนั้นก่อน

English translation

Where the same criminal case has been filed by both the public prosecutor and the injured person in the same court of first instance or in different courts, such courts have the power to order the cases to be consolidated and tried as a single case, whether on the court's own initiative or upon a plaintiff's motion at any stage before judgment is rendered. However, no such order may be made unless the consent of the other court has first been obtained.

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

Firm annotation

Section 33 solves the practical problem that arises when the prosecutor and the injured person each file the same case, a situation the standing rules in Section 28 make possible. Rather than treating the second filing as a prohibited duplicate suit, the Code lets the court consolidate them into one proceeding, on its own initiative or on a plaintiff's motion before judgment, subject to the consent of any other court involved. Consolidation is for convenience of trial and does not merge the plaintiffs' separate procedural duties, such as the duty to appear under Section 166. This differs from an impermissible duplicate filing of the same case by the same party, which remains barred.

Why this matters in practice

If a prosecutor and you both filed the same case, ask for consolidation to avoid inconsistent results and wasted costs, but do not assume it merges your obligations. Even after cases are joined, each plaintiff must still meet duties such as appearing on the hearing date, or risk dismissal. If you are unsure whether your situation is a lawful parallel filing or a barred duplicate, get advice before you file the second case.

Supreme Court decisions interpreting this section

  1. Supreme Court Judgment No. 21329/2556 (2013)

    No law restricts the public prosecutor from prosecuting an offence the injured person has already prosecuted, and section 33 itself contemplates the prosecutor and the injured person each bringing the same case, so the prosecutor's later charge is not a duplicate. The position is different for the injured person. Where the injured person, having already sued, then applies to join the prosecutor's case as co-plaintiff and adopts the prosecutor's charge as their own, the effect of allowing it is that the injured person has sued the defendant twice on the same matter. That is a duplicate filing barred by Civil Procedure Code section 173 paragraph 2(1) read with section 15, and leave to join is improperly granted.

    The injured person prosecuted the defendant first, and the public prosecutor later prosecuted the same matter. The Supreme Court held that the prosecutor's charge was not a duplicate: no law restricts the prosecutor from charging an offence the injured person has already charged, and section 33, which provides for consolidation where the prosecutor and the injured person have each filed the same case in the same or different courts of first instance, shows that both may do so. But the injured person then applied to join the prosecutor's case as co-plaintiff, adopting the prosecutor's charge as their own. The Court held that once the trial court allowed that, the injured person had in substance sued the defendant a second time on the same matter, which is a duplicate filing barred by Civil Procedure Code section 173 paragraph 2(1) with section 15, and it quashed the order granting leave to join.

  2. Supreme Court Judgment No. 3131/2562 (2019)

    Injured persons who file the same criminal case in two different courts as duplicate suits fall outside Section 33 and are barred, because such duplication is prohibited under the Civil Procedure Code applied through Section 15.

    Fourteen injured plaintiffs filed the same criminal case in two different courts as two overlapping suits. The court held this did not meet the criteria of Section 33 and was a prohibited duplicate filing under Civil Procedure Code Section 173(2)(1) applied through Section 15, distinguishing lawful parallel prosecution by different parties from the same party filing twice.

  3. Supreme Court Judgment No. 5461/2534 (1991)

    Consolidation under Section 33 is only for the convenience and speed of trial and does not relieve a plaintiff of independent procedural duties such as the duty to appear under Section 166.

    Even though the cases of plaintiffs 1 and 2 were consolidated with plaintiff 3's case, the court held consolidation was only for convenience and speed of trial. It did not free plaintiffs 1 and 2 from their duty under Section 166 to appear, so their failure to attend without excuse could still lead to dismissal of their part.

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

Cited in 8 Supreme Court decisions (1971 to 2019)

Selected citing decisions

  • Decision 1438/2527 (1984)
  • Decision 1833/2514 (1971)
  • Decision 21329/2556 (2013)
  • Decision 9134/2551 (2008)
  • Decision 5461/2534 (1991)
  • Decision 1646-1649/2515 (1972)
  • Decision 1646/2515 (1972)
  • Decision 3131/2562 (2019)

This list is selected automatically, weighted towards judgments that turn on this section rather than ones that merely recite it when passing sentence. It has not yet been reviewed by the firm.

Most often cited alongside

Sections that appear in the same judgments as this one most often. The figure is the number of decisions.

Counted across the firm's corpus of 83,652 Supreme Court decisions, 1921 to 2026. The count is complete; the stated year range trims rare outliers so it describes where the citations actually sit. These figures are computed by us and are not official court statistics. How we count these, and what we measured

Frequently asked questions

Can two versions of the same criminal case be combined?

Yes. Under Section 33, where the prosecutor and the injured person filed the same case, the court may consolidate them into one, before judgment, with the other court's consent if different courts are involved.

Does consolidation merge the plaintiffs' duties?

No. Consolidation under Section 33 is only for convenience of trial. Each plaintiff still has to meet their own duties, such as appearing at the hearing under Section 166.

Is filing the same case twice always allowed?

No. Section 33 covers parallel filings by the prosecutor and the injured person. It does not permit the same party to file the same case twice, which remains a barred duplicate suit.

Related guides on ThaiLawOnline

Cite this section

  • Plain citation Criminal Procedure Code, s. 33 (Thailand)
  • Academic citation Criminal Procedure Code (Thailand), s. 33. ThaiLawOnline, https://www.thailawonline.com/thai-criminal-procedure-code/section-33/ (accessed 1 September 2026).
  • Thai citation ป.วิ.อ. มาตรา 33
  • Permalink https://www.thailawonline.com/thai-criminal-procedure-code/section-33/
  • Embed on your site <blockquote cite="https://www.thailawonline.com/thai-criminal-procedure-code/section-33/"><p>Where the same criminal case has been filed by both the public prosecutor and the injured person in the same court of first instance or in different courts, such courts have the power to order the cases to be consolidated and tried as a single…</p><footer>Criminal Procedure Code, s. 33 (Thailand): <a href="https://www.thailawonline.com/thai-criminal-procedure-code/section-33/">ThaiLawOnline</a></footer></blockquote>

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

This is educational reference, not legal advice. Consult a qualified Thai lawyer before relying on any provision.

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