This thesis elaborates on crucial aspects of discourses on wilderness in Austria. It investigates terminologies and concepts that are central to these discourses, as to carve out different approaches to think about wilderness. Doing so, this thesis aims at linking wilderness-protection and -management with spatial planning, acknowledging the need for establishing this exchange between disciplines. As the wilderness-discourse in Austria is mainly focused on quality, spatial planning still remains of subordinate importance to discussions in the field. Yet, the quantification of wilderness can be seen as the next step and this is where spatial planning enters the scene: Spatial planning could offer valuable inputs to debates on process of quantification - and thus bears the potentials for gaining a more powerful voice in discourses on wilderness-protection and -management. Quantification means manifestation in the area which assumes that there is enough information about the space and willingness to reduce spatial utilization requirements. On the case of existing and potential areas of wilderness, relevant legal materials will be described and analysed. This paper aims at illustrating the limits and potentials for spatial planning to contribute to discussions in the domains of wilderness-protection and -management.