The Oslo Centre for Critical Architectural Studies (OCCAS) is a research centre for humanities-based, advanced studies in architecture.

OCCAS studies the cultural significance of the built world, its historical preconditions and its contemporary status. OCCAS looks at the built environment as a site for cultural negotiation and contestation. With material ranging from objects, projects, exhibitions and print culture, to architectural processes, buildings and landscapes, OCCAS insists on the contemporary relevance of historical and theoretical research, its critical potentials, and its urgent function in understanding the built environments of the present and the future.