Women and Lung Cancer Research and Preventive Services Act of 2018 This bill requires the Department of Health and Human Services to conduct an interagency study regarding research on lung cancer in women, access to lung cancer preventive services, and public awareness and education campaigns on lung cancer. The study must include a comprehensive report on research and knowledge gaps related to lung cancer in women in the federal government and recommendations for: (1) a research program that would encourage innovative approaches to eliminate knowledge gaps, (2) the development of a national lung cancer screening strategy with sufficient resources to expand access to screening, and (3) the development of a national public education and awareness campaign on lung cancer in women and the importance of early detection of lung cancer.