About 15.4% of young Europeans aged 15 to 34 consumed cannabis in the past year, according to the 2025 European Drug Report from the European Union Drugs Agency. Cannabis remains, by far, the most commonly used illicit substance across the continent, with an estimated market value of US$14 billion (€12.1 billion).
Usage rates vary sharply across the region, with legal frameworks ranging from tolerance and partial decriminalization to strict prohibition. The percentages shown for each country on this list represent the share of young people (ages 15–34) who reported cannabis use. So, which EU country tops the list? Click on to find out.