Brazil is the second largest producer of tobacco in the world, and 96% of the tobacco produced is in the three Southern states (including the state of Paraná – the proposed geographic setting for this application). Paraná also has the highest prevalence of cigarette smoking among women in the country, and smoking initiation is higher among girls than boys. Therefore, this study focuses on the development of a Network for Tobacco Control among Women in Paraná, Brazil in order to establish community and institutional capacity to promote gender-relevant tobacco control efforts among Brazilian women through community-based participatory research and training. The goals of the “Network” are to reduce tobacco use and exposure to environmental tobacco smoke among Brazilian women, and to develop a cadre of well-trained researchers in tobacco control who will continue to address comprehensive tobacco control strategies at all levels long after the study has ended.