The Global Adult Tobacco Survey (GATS) Atlas highlights findings from 22 GATS countries in a user-friendly, visual format and incorporates data covering nearly 60 percent of the world's population. The Atlas presents globally comparable data for more than 3 billion adults. Data presented in The GATS Atlas includes information on monitoring and use of tobacco, efforts to reduce secondhand smoke prevalence, tobacco price and tax information, highlights of regional and country specific tobacco use trends from low- and middle-income countries and a section that tracks progress to reduce tobacco use. In the 22 countries examined in the atlas, 688 million people smoke tobacco and the average age of initiation is under 20 years. GATS is a nationally representative household survey of adults aged 15 years and older that systematically monitors adult tobacco use and tracks key tobacco control indicators. The survey uses a standardized methodology across all countries to generate comparable data within and across countries. GATS is intended to enhance a country's capacity to design, implement and evaluate tobacco control interventions.