The most recent estimates of prevalence of use are summarized in the map in Figure 1. Overall, cannabis use appears to be more common in Western than in Eastern countries. Based on data collected between 2013 and 2019, past-month prevalence of use was below 1% in Malta, Hungary, and Turkey. In three countries (Croatia, Italy, the Netherlands), between 5 and 6% of adults reported past-month cannabis use. Highest use rates were recorded in Spain (9·1%) and France (6·4%). The country-level cannabis use prevalence rates are further reported in Supplemental Material 1 (Supplemental Table 1).