Ontological pluralism is the view that there is more than one fundamental way of being. This paper sketches ontological pluralism about non-being, the idea that non-being can be further divided into more fundamental categories. After drawing out the relationship between pluralism about being and pluralism about non-being, I discuss quantificational strategies for the pluralist about non-being. I examine historical precedent for the view. Finally, I suggest that pluralism about non-being has explanatory power across a variety of domains, and that the view can account for differences between non-existent past and future times, between omissions and absences, and between different kinds of fictional objects.