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    Educational Information Only

    The content on this page is for general educational purposes and does not constitute legal advice. Every legal situation is unique. For matters involving investigation, arrest, litigation, or formal proceedings, consult a qualified legal professional.

    Narcotics
    serious offence

    Drug Possession in Thailand

    Possession of controlled substances for personal use.

    Last updated: February 2026
    Legal Sections

    Narcotics Act Section 15, Narcotics Act Section 57

    Maximum Penalty

    Category 1: up to 10 years; Category 2: up to 5 years

    Severity Level

    serious

    Definition

    Possession of controlled substances for personal use. Under Thai law, this offence is classified as a serious offence within the category of Narcotics.

    Elements of the Offence

    For a conviction, the prosecution must prove all of the following elements beyond reasonable doubt:

    1

    Physical possession or constructive possession

    2

    Of a controlled substance

    3

    Knowledge of the substance

    Penalties

    Maximum Penalty

    Category 1: up to 10 years; Category 2: up to 5 years

    Actual sentences depend on factors including the severity of the conduct, harm caused, prior convictions, and mitigating circumstances. Courts have discretion to impose lesser sentences within the statutory range.

    Possible Defences

    The following defences may be available depending on the circumstances:

    No knowledge of possession

    Substance is not controlled

    Lawful prescription

    Note: The availability of defences depends on specific facts. Professional legal advice is essential.

    For Foreigners

    Special Considerations for Foreign Nationals

    Foreigners convicted of drug offences face imprisonment followed by deportation and permanent blacklisting from Thailand.

    When Legal Representation Matters

    If you are accused of drug possession or facing investigation, immediate legal representation is essential to protect your rights and build an effective defence.

    Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.

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