This special issue of the Journal of Media Literacy Education explores the role of media literacy across the lifespan. Media literacy education interventions must be designed to meet the needs of individuals of different ages by understanding the life roles and goals that they have across the lifespan. Different pedagogical strategies are required to effectively address the media literacy competencies of young children, teens, adults, parents, and older adults. In old age, media literacy education may support cognitive functioning and social relationships and help people critically assess health-related information and services. Adopting a life course perspective enables the examination of media literacy competencies which unfold over time in response to changing historical conditions, social institutions and policies. This article reviews the literature to identify the current state of media literacy for different age groups, the present and future needs, and the media education content and instructional methods that have been used with children and adolescents, adult, and older people.