Since the initial reception of theCritique of Pure Reasontranscendental idealism has been perceived and criticized as a form of subjective idealism regarding space, time, and the objects within them, despite Kant's protestations to the contrary. In recent years, some commentators have attempted to counter this interpretation by presenting transcendental idealism as a primarily epistemological doctrine rather than a metaphysical one. Others have insisted on the metaphysical character of transcendental idealism. Within these debates, Kant's rejection ofontology(of the kind exemplified by Wolff (...) and Baumgarten) has received comparatively little treatment, although it is often acknowledged. The present essay seeks to contribute to the secondary literature on Kant by offering an analysis of this claim and elaborating its consequences for transcendental idealism. This will take the form of a critical examination of transcendental idealism's supposedontological agnosticism—that is, its disavowal of any ontological claims. The overall conclusion is that Kant's rejection of ontology is deeply problematic, and to such an extent that it may be necessary to reconsider the possibilities of defending transcendental idealism as a purely epistemological, non-ontological doctrine. (shrink)