Building on the insights of the late Roy Bhaskar and the late Roger Matthews, as well as some recent developments in ultra-realist criminology, this article introduces and delineates some core intellectual contours of a Critical Realist Criminology (CRC) based on the principles of:1. The ‘emergent,’ stratified ontology of crime and of the offender;2. the full critical realist account of the dialectics of being and becoming, including the spiritual turn in critical realism, applied to processes of criminal justice and reform;3. maximal inclusion of diverse theoretical research positions and the primacy of ontology in methodological selection;4. a ‘serious’ critical relationship of criminologists with professionals, institutions and policy-ma...