The Global Adult Tobacco Survey India (GATS India) is the global standard for systematically monitoring adult tobacco use (smoking and smokeless) and tracking key tobacco control indicators. Global Adult Tobacco Survey India was carried out in all 29 states of the country and 2 Union Territories of Chandigarh and Puducherry, covering about 99.9 percent of the total population of India. The major objectives of the survey were to obtain estimates of prevalence of tobacco use (smoking and smokeless tobacco); exposure to second-hand smoke; cessation; the economics of tobacco; exposure to media messages on tobacco use; and knowledge, attitudes and perceptions towards tobacco use.