This study aims to examine the effects of education provided to mothers of children aged 9-15 within the framework of the Health Belief Model on mothers' knowledge, attitudes, and behaviors about Human Papillomavirus (HPV), and their willingness to have their children vaccinated against HPV. The study, designed with a randomized controlled experimental design, will be conducted at three different Family Health Centers in Gaziantep and will consist of both experimental and control groups. Mothers in the experimental group will receive a three-session visually supported education program prepared by Yıldız USCA, while the control group will receive routine information using HPV brochures from the Ministry of Health. Data collection tools include a personal information form, an HPV knowledge scale, and an HPV Health Belief Model scale.