Graham Harman’s Object-Oriented Ontology (OOO) emphasizes the autonomy of objects, positing a withdrawn surplus of being that resists reduction to its parts or the sum of its parts. However, Harman’s framework faces conceptual tensions, including challenges in reconciling epistemological and ontological dimensions, explaining the formation of compound objects, and ascribing determinate features to experientially inaccessible objects. I argue that these issues arise mostly due to Harman’s over-commitment to a withdrawn substantial core of objects. To address these issues, I propose turning (...) to Jean-Luc Nancy’s post-phenomenological materialism and Alain Badiou’s mathematical realism. Both Nancy and Badiou offer alternatives to Harman’s substantialist core, emphasizing a local, contextually bound identity of things, which describes a restricted domain from the endlessly broader horizon of relations and situations in which each thing is or can be involved. They thus account for the surplus of being in each thing and consequently their ontological autonomy without recourse to a substantive grounding. I argue such a relational-friendly account of pluralism avoids the conceptual issues Harman’s OOO runs into. Lastly, I emphasize the value of OOO as an advocate for ontological equality that seeks to avoid the emergence of privileged actors or centralized discourse. This dialogue between Harman, Nancy, and Badiou thus seeks to advance the possibility of pluralistic ontologies within relational frameworks, combining the perspectives of OOO with post-phenomenological theories to explore the complexities of relationality without recourse to non-relational substrata. (shrink)