Is Heroin legal in Singapore?
Also known as: diacetylmorphine, smack
- Legal status
- Class A controlled drug. Misuse of Drugs Act 1973 (Singapore), First Schedule, Part 1 (Class A Drugs), entry (35), which reads "Diamorphine". Section 2 defines a controlled drug as "any substance or product which is for the time being specified in Part 1, 2 or 3 of the First Schedule or anything that contains any such substance or product".
- Consequences if caught
- Second Schedule reach: YES. Diamorphine is one of the eight terms the capital rows name. Second Schedule, section 5 row: "Unauthorised traffic in controlled drug containing such quantity of diamorphine being"... "more than 15 grammes" carries the punishment "Death". The identical band appears for unauthorised import or export under section 7. Unauthorised manufacture is capital at any quantity: "Unauthorised manufacture of diamorphine or any salt of diamorphine" carries "Death" with no weight band at all. Below that band the Second Schedule sets imprisonment and caning rather than death, and unauthorised possession under section 8(a) is never capital, its heaviest band being "Maximum 30 years and 15 strokes".
- If prescribed or medical
- Supply for a genuine medical purpose is authorised only under the Act and the regulations made under it. Do not rely on a foreign prescription without checking with the Health Sciences Authority before travelling. Nothing here authorises possession.
- Documentation
- VERIFIED against the instrument. Instrument: Misuse of Drugs Act 1973 (Singapore). Sections: First Schedule Part 1 entry (35) for the listing, and the Second Schedule (headed "Sections 2, 33(1), (2), (3), (3B) and (4D) and 33B(1)") for the punishment. URL: https://sso.agc.gov.sg/Act/MDA1973. The whole Second Schedule was read, all 20 rows carrying "Death", before this cell was written.
- Misuse of Drugs Act 1973 (Singapore), First Schedule, Second Schedule, Third Schedule and Fifth Schedule, on Singapore Statutes Online at https://sso.agc.gov.sg/Act/MDA1973, read as at the version the page marks "Current version as at 17 Sep 2026", the most recent amendment shown on its own timeline being S 321/2026 with effect from 1 June 2026
Want to know if Singapore changes its law on Heroin?
Drug-law changes, court decisions and research, once a month.
Free. We email you once to confirm. Unsubscribe with one click.
What sentences have courts imposed for Heroin in Singapore?
Prosecutions recorded in Singapore, each checked against the official document cited below it. Individuals are never named, and these are examples of what has happened, not a prediction of what will. How we verify a court case.
Across 10 verified cases, sentences ranged from 2 years and 9 months to 18 years. 6 cases carried the death penalty; 1 case carried life imprisonment.
The General Division of the High Court of Singapore convicted the accused on four proceeded charges under the Misuse of Drugs Act. The court sentenced the accused to death on the first charge and to 14 years' imprisonment in the aggregate for the remaining three. A further charge concerning not less than 1.01g of methamphetamine was stood down by the Prosecution.
2021an accused personCitation [2025] SGHC 37
Charge having in his possession for the purpose of trafficking (s 5(1)(a) read with s 5(2) and punishable under s 33(1))
Quantity not less than 38.78 g heroin; not less than 7.22 g heroin; not less than 17.62 g methamphetamine
convicted on four charges, sentenced to death on the first and 14 years' imprisonment in the aggregate on the rest
Substances recorded synthetic-cannabinoids, heroin, methamphetamine
The General Division of the High Court of Singapore convicted the accused on two proceeded charges under the Misuse of Drugs Act, one concerning diamorphine and one concerning not less than 624.5g of cannabis. The alternative sentencing regime under s 33B was unavailable to him, so the mandatory death penalty applied and the court pronounced the death sentence on each of the two charges. Further charges stood down at the start of the trial were withdrawn by the Prosecution.
2020an accused personCitation [2026] SGHC 38
convicted on two charges, sentenced to death on each
Substances recorded cannabis, heroin
The General Division of the High Court of Singapore convicted the accused on charges under the Misuse of Drugs Act. The court found that he was not a courier, so the alternative sentencing regime was not available to him, and sentenced him to the mandatory death penalty.
2020an accused personCitation [2023] SGHC 182
Charge trafficking in a controlled drug (s 5(1)(a) read with s 5(2) of the Misuse of Drugs Act)
Quantity not less than 24.64 g heroin
convicted, sentenced to the mandatory death penalty
Substances recorded heroin
The General Division of the High Court of Singapore convicted the accused on two charges under the Misuse of Drugs Act. Both statutory conditions for the alternative sentencing regime were satisfied, so the court imposed life imprisonment and caning instead of the death penalty, sentencing the accused to life imprisonment and the minimum of 15 strokes of the cane on each of the two charges. Because the global number of strokes could not exceed the statutory maximum, the total caning imposed was 24 strokes.
2020a 29-year-old accused personCitation [2026] SGHC 137
Charge importing controlled drugs without authorisation (s 7 of the Misuse of Drugs Act)
Quantity not less than 42.18 g heroin; not less than 330.8 g methamphetamine
convicted on two charges, life imprisonment and 24 strokes of the cane
Substances recorded heroin, methamphetamine
A 29-year-old Malaysian man collected a paper bag left for him on the ground between two dustbins on a Singapore street, on his supplier's instructions, and was arrested shortly afterwards. The packet inside was certified as containing not less than 16.19 grams of diamorphine, above the fifteen grams at which the death penalty is prescribed. He was charged with possessing not less than 9.99 grams for the purpose of trafficking, the top of the highest non-capital band. He pleaded guilty, was found to have acted as a courier, and was sentenced to 13 years' imprisonment and 10 strokes of the cane.
2019a man, 29, found to have acted as a courierCitation [2022] SGHC 37
Charge for the purpose of trafficking (s 5(1)(a) read with s 5(2), Misuse of Drugs Act)
Quantity not less than 9.99 g heroin
convicted on a guilty plea of possessing diamorphine for the purpose of trafficking, 13 years' imprisonment and 10 strokes of the cane
Substances recorded heroin
The High Court of Singapore convicted the accused of trafficking in diamorphine. The court found that he was not a courier but bought diamorphine in order to sell it on to his own customers for profit, so the alternative sentencing regime was unavailable and the death sentence followed as mandated by s 33(1) of the Misuse of Drugs Act read with the Second Schedule.
2017a 37-year-old accused personCitation [2023] SGHC 142
convicted, sentenced to death
Substances recorded heroin
Police stopped the respondent at a shopping centre on 12 July 2016, after which he tried to flee. Drugs and utensils were recovered from his bag and residence. On the enhanced diamorphine-possession count, the High Court concluded that the mandatory minimum did not adequately reflect his antecedents and TIC charges and increased the term to two years and nine months.
2016repeat adult drug offender arrested after a police spot checkCitation [2018] SGHC 151
convicted of enhanced possession of diamorphine, two years nine months imprisonment
Substances recorded heroin
In August 2016 a 38-year-old Singaporean man collected three wrapped bundles from a courier in his car and drove to await delivery instructions, where officers arrested him. The bundles held not less than 54.04 grams of diamorphine, and his only defence was that he believed he was carrying smuggled cigarettes because the man who engaged him had said so. The courts rejected that account and he could not rebut the presumption that he knew what he was carrying. He was found to be a courier, but no certificate of substantive assistance was issued, so the death sentence was mandatory and the Court of Appeal upheld it in 2022.
2016a Singaporean man, 38 at the time of the offence, a freelance delivery manCitation [2022] SGCA 23
Charge possession of a controlled drug for the purpose of trafficking (s 5(1)(a) read with s 5(2), Misuse of Drugs Act (Cap 185, 2008 Rev Ed))
Quantity not less than 54.04 g heroin
convicted of possession of diamorphine for the purpose of trafficking, mandatory death penalty
Substances recorded heroin
Officers of the Central Narcotics Bureau arrested the accused at a rented room in 2015 and seized packets later analysed as diamorphine. The High Court convicted the accused of possession of not less than 25.01g of diamorphine for the purpose of trafficking. The court imposed the mandatory death penalty.
2015an accused person in a rented roomCitation [2022] SGCA 50
convicted of possession of diamorphine for the purpose of trafficking, mandatory death penalty
Substances recorded heroin
In August 2008 a 36-year-old man rode a motorcycle into Singapore at a land border checkpoint, where officers found four wrapped bundles in his carrier basket. One held not less than 27.86 grams of diamorphine, nearly twice the quantity that attracts the death penalty. He was a courier repaying a debt who had asked his supplier whether heroin would ever be involved and had been told it would not be. The Court of Appeal held that failing to check the package was at most negligence, set aside the capital conviction, and sentenced him to 18 years' imprisonment and 8 strokes.
2008a man, 36 at the time of the offence, a courier repaying a debtCitation [2011] SGCA 17
Charge attempting to import “Class A” controlled drugs (other than diamorphine) (s 7 read with s 12 of the Misuse of Drugs Act)
convicted of attempting to import Class A controlled drugs, 18 years' imprisonment and 8 strokes of the cane
Substances recorded heroin
Heroin in related jurisdictions
Other substances confirmed in Singapore
Same substance, other countries
Drug laws and enforcement change and vary within a country. This is not legal advice. Always confirm with Singapore’s embassy or official drug authority before traveling; penalties can be severe, including imprisonment.
Before you travel
Verify current rules with the destination country’s official drug authority and your own country’s embassy before traveling. Find the destination’s U.S. embassy & official country guidance →
Non-U.S. travelers: check your own government’s travel advisory and embassy.
If you’re detained or arrested abroad
Contact your own country’s embassy or consulate in the destination immediately, not the destination’s authorities. U.S. citizens: contact the nearest U.S. embassy/consulate and the U.S. State Department at +1-202-501-4444 (from abroad). If a U.S. citizen is arrested or detained abroad →
