The WHO's Substance Abuse site includes statistics, publications, general information, and research tools.

From the United Nations Office on Drugs and Crime, the Report "is aimed at improving the understanding of the world drug problem and contributing towards fostering greater international cooperation for countering its impact on health, governance and security."

Based out of Oxford University, Our World in Data's report on drug use looks at smoking, alcohol consumption and the use of illicit drugs around the world.

NIDA's mission is to "advance science on the causes and consequences of drug use and addiction and to apply that knowledge to improve individual and public health."