 This study evaluates the correlation between fear of vaccination and knowledge, behaviors, and perceptions among caregivers in Nigeria, finding that about 15 percent of caregivers have some form of fear regarding vaccination, which is significantly correlated with the lack of accurate vaccination knowledge, lower likelihood of vaccination uptake for their children, and lack of perceptions of vaccination importance and intention to vaccinate their children. This article was authored by Ryoko Sotto and Benjamin Fintan.