⚖️ Legal Status at a Glance — Seoul, South Korea
Overview
Seoul draws millions of visitors for K-pop, food and nightlife in Itaewon, Hongdae and Gangnam. Cannabis is a narcotic under Korean law, there is no personal-use allowance, and foreigners are prosecuted on the same terms as Koreans.
The biggest risk for most visitors is not buying in Seoul. It is arriving with a THC vape, gummies or CBD oil that is legal at home. Korea treats bringing cannabis into the country as import, one of the most serious drug offences on its books, whether you meant to or not.
The Law Right Now
Cannabis is governed by the Narcotics Control Act (마약류 관리에 관한 법률). Smoking or ingesting cannabis, or possessing it for that purpose, carries up to 5 years in prison or a fine of up to KRW 50 million (Art. 61(1)). Selling, receiving or supplying cannabis carries at least 1 year (Art. 59(1)). Importing or exporting it, or possessing it for that purpose, carries 5 years to life (Art. 58(1)).
CBD offers no safe harbour. The Korea Customs Service has warned that products containing THC or CBD, including oils, gummies, chocolates and vape cartridges, are seized at the border and can be prosecuted, even when bought legally abroad or received as a gift.
Korean citizens are also bound by the law abroad. In May 2024 the Ministry of Justice warned Koreans that smoking cannabis in countries where it is legal, such as Canada, Thailand or Germany, can be prosecuted back home. Foreign visitors are prosecuted for what they do in Korea, and hair or urine tests are standard evidence.
Medical cannabis has been legal since March 2019, but only in the form of a few approved imported medicines, such as Epidiolex, Sativex, Marinol and Cesamet, supplied to Korean patients through the Korea Orphan & Essential Drug Center. A foreign medical cannabis card or prescription does not let you bring cannabis in.
Realistic Consequences
There is no confiscate-and-warn outcome. A tourist caught with cannabis faces a criminal case. Police can hold a suspect for 48 hours, and with a court warrant pre-charge detention can run to about 30 days. Even without detention, foreigners are normally banned from leaving Korea until the investigation ends. Defence lawyers report that first-time cases involving small amounts can end in a suspension of indictment, but that depends on the facts and on hiring counsel, and claiming ignorance rarely works.
Deportation is the second penalty. Under current law, a foreigner who receives a prison sentence, including a suspended one, can be deported, usually with an entry ban. A July 2026 bill would extend this to foreigners who only receive a fine. Scale matters too. In 2025, 623 drug seizure cases were recorded at Korean airports, 592 of them at Incheon, up from 112 in 2022. Customs also recorded 234 cannabis seizure cases, roughly triple the 80 recorded in 2024.
📡 Regulation Pulse
- August 2025–January 2026: a police crackdown on clubs, online sales and foreign communities arrests 6,648 drug suspects, including 1,113 foreign nationals, and seizes 149 kg of cannabis.
- June 2026: customs report a record 3,318 kg of narcotics seized at the border in 2025, more than four times the 2024 total, and step up cargo inspections.
- 3 July 2026: a bill is filed to allow deportation of foreigners fined for drug offences, not only those sentenced to prison.
- 3 August–31 October 2026: a nationwide special crackdown targets drug use in bars and clubs and drug smuggling, timed to cover Chuseok and Halloween.
Public Sentiment
Koreans overwhelmingly back prohibition. In a Hankook Research survey of 1,000 adults in December 2022, only 12% supported legalising recreational cannabis and 82% opposed it. With authorities catching 23,403 drug offenders in 2025, public and political pressure pushes towards more enforcement, not less.
Practical Advice for Visitors
Check every bag before you fly to Korea. A forgotten vape pen, gummy or pre-roll counts as import, which carries 5 years to life.
Leave CBD oil, CBD gummies and hemp edibles at home. Korea treats them as cannabis, whatever their THC content.
Do not buy cannabis in Itaewon, Hongdae or Gangnam clubs, or through Telegram. Nightlife venues are the focus of the current crackdown, and buyers are prosecuted along with sellers.
Do not order cannabis products to your hotel or an Airbnb. Customs screens international mail and courier parcels, and the person who receives the parcel is the one investigated.
Stop using cannabis well before your trip. Police use hair and urine tests, and a positive result after arrival can trigger an investigation.
If you are detained, ask for your embassy and a lawyer at once. Do not sign a Korean-language statement you cannot read, and expect an exit ban until the case is closed.
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