If assessing the existence of a corporate entity is meaningless before establishing the presumed existence of its members, we should then first investigate what is supposed to make these members irreducible to begin with. I discuss two broad philosophical outlooks in that regard. The first understands individuals as naturally irreducible, organic or soulful, entities. The second treats individuals themselves as organizations of a miniature size, and in that sense as artificial entities. The first approach essentially poses an insurmountable barrier to the possibility of genuine corporate existence; the second is more accommodating. Rather than suggesting which approach is correct from a philosophical perspective, this chapter extracts from the aforementioned discussion a more nuanced way of thinking about the problem of corporate existence in general, setting the stage for revisiting how we theorize international organizations.