Each year in the United States, cigarette smoking causes an estimated 480,000 deaths, including approximately 41,000 deaths from secondhand smoke exposure among nonsmoking adults (1). Smoke-free policies protect nonsmokers from secondhand smoke exposure, reduce the social acceptability of smoking, help in preventing youth and young adult smoking initiation, and increase smokers' efforts to quit smoking (1,2). Given that 99% of adult cigarette smokers first start smoking before age 26 years and many smokers transition to regular, daily use during young adulthood (2),* colleges and universities represent an important venue for protecting students, faculty, staff members, and guests from secondhand smoke exposure through tobacco control policies (3). To assess smoke-free and tobacco-free policies in U.S. colleges and universities, CDC and the American Nonsmokers' Rights Foundation (ANRF) determined the number of campuses nationwide that completely prohibit smoking (smoke-free) or both smoking and smokeless tobacco product use (tobacco-free) in all indoor and outdoor areas. As of November 2017, at least 2,082 U.S. college and university campuses had smoke-free policies. Among these campuses, 1,743 (83.7%) were tobacco-free; 1,658 (79.6%) specifically prohibited electronic cigarette (e-cigarette) use; and 854 (41.0%) specifically prohibited hookah smoking. Smoke-free and tobacco-free policies on college and university campuses can help reduce secondhand smoke exposure, tobacco use initiation, and the social acceptability of tobacco use (1-3).