Seven state/local immunization program managers were convened to discuss how public health immunization programs could enhance their efforts to promote adolescent vaccination, with an emphasis on late adolescence (ages 16-18 years). The Centers for Disease Control and Prevention's revised childhood immunization schedule for 2017 and a recently proposed preventive care platform at 16 years of age provide a unique opportunity to focus on increasing adolescent immunization rates in this population. Public health officials discussed challenges to immunizing this population and suggested key strategies for supporting late-adolescent immunization, including partnerships between public health and immunization providers; nationally supported public information campaigns; and using immunization data specific to this population to track progress.