Research on transnational literacies has generally focused on youth who live in one country and communicate using digital literacies across national boundaries. Our work contributes to this literature by providing a view of transnational literacies that are unique to the USA-Mexico border region. The students in this ethnographic study navigate two countries, two languages, and two homes on a weekly and sometimes daily basis. This article describes the literacies that these transfronterizo youth acquire as border crossers. Our focus is on the print and digital literacies learned outside of the classroom and how these are being used by the students in academic settings. (Contains 3 notes.)