This chapter compares Heidegger’s transcendental approach to social ontology with that found in Husserl. I argue that Husserl and Heidegger are united by the idea that ’the world’ or ’transcendence’ constitutes the most basic form of intersubjectivity, but that their different understandings of the concept of the world lead to divergent conceptions of both subjectivity and intersubjectivity. In short, Husserl takes the world to involve irreducible references to others since perceptual objects can only appear as real or as transcendent if we assume that they possess an inexhaustive number of unperceived aspects that are, in principle, available to other (transcendental) subjects. Heidegger, on the contrary, rejects both Husserl’s interest in objectivity and his notion of the transcendental subject. Instead, he claims that Dasein’s relation to the world must be understood in terms of practical and affective engagement within a field of possibilities, that is, in terms of existential projections. Accordingly, the most basic form of intersubjectivity is found in the transcendental necessity that the same field of entities can be subjected to a multitude of existential projections.