This entry presents mediatization as concept and as an emerging research field. Mediatization is a name for the long-term structural impact of the media on institutions like politics, religion, family, education, and so on. In this process, the autonomy of media institutions increases, media technologies become ever more present and deeply integrated into everyday life, media esthetics and media logics saturate the fabrics of social practices and cultural life. Different aspects and indicators of mediatization are discussed. So is mediatization in relation to education, digitalization, and media literacy.