This study critically examines the transformation of metaphysical inquiry in the postmodern era, highlighting how postmodern philosophical critiques reconfigure traditional concepts of being, truth, and reality. Drawing on interpretive qualitative methodologies grounded in conceptual analysis and textual exegesis, the research interrogates key postmodern interventions that challenge the foundational absolutes of classical metaphysics. It argues that postmodernism’s scepticism toward grand narratives and its emphasis on language, discourse, and socio-historical context render metaphysical inquiry reflexive and contingent rather than transcendental and universal. The study further explicates the implications of this transformation for contemporary social science theory, underscoring the necessity of situating ontological assumptions within interpretive frameworks that respect plurality and contextuality. By reconceiving metaphysics as a critical audit of conceptual presuppositions rather than a sovereign ontology, the research contributes to ongoing debates in philosophy and human sciences.