Th e rise in residential mobility among families has created a pervasive issue in American schools that impacts the academic, social, and physical achievements of youth. This article aims to outline the profiles of two unique populations--migrant and military youth--impacted by residential mobility and provide recommendations for how their needs can be met through physical education. For the purposes of this article, the term "mobile" will describe those persons impacted by residential mobility. Physical education programs can provide a nurturing environment that provides some measure of stability. For this reason, it is important that educators develop and involve mobile students in high-quality, effective programs so that if they must leave, they can do so with a positive image of physical education and physical activity that will last a lifetime.