This article presents a systematic meta-review of the scientific literature discussing the concepts of information literacy, media literacy, and digital literacy. While carrying out a cross analysis of the way in which literature reviews specifically address these three concepts, this article identifies, and articulates a critical analysis of, the main findings from the reviewed texts regarding the conceptual landscape that they cover. This work highlights confusion between the constitutive dimensions of literacies, recurrent difficulties in establishing theoretical articulations between contributions, and operationalization problems in observing and assessing these literacies. These issues are the subject of a discussion grounded in the specific field of media education.