In Thailand, cannabis, known by the name Ganja (Thai: กัญชา; RTGS: kancha), was decriminalised in 2022. Cannabis extracts and products are officially limited to 0.2% tetrahydrocannabinol (THC) content. Only medicinal use is legal, but in practice there is widespread recreational usage, with rules passed in July 2025 aiming to curb that usage.
![]() Location of Thailand (dark green) | |
Medicinal | Legal |
---|---|
Recreational | Criminalized |
Hemp | Legal |

Import and export of cannabis are still highly regulated.
Sales of cannabis plant parts, products, and edibles are prohibited to minors (under 20-years-old), pregnant women, and breastfeeding women. Cannabis smoke is considered a public nuisance and thus prohibited in public areas. Public use is sometimes subject to fines under the 1992 Public Health Act.