In recent years, the concept of "justice" has once again become a central point in both socio-political and scientific debates. For this reason, the ReGerecht project, funded by the BMBF's "Stadt-Land-plus" initiative, addresses the topic from a spatial perspective. Since there is thus far no fundamental, com-prehensive work regarding the current state of discussion on this topic, the authors review the existing lines of discussion from geography, spatial planning studies, law, land use, environmental justice, eco-system services, energy justice and digitalisation. Subsequently, the definitions of central terms are further developed and recommendations for concrete cases of application are derived.