Quantum theory is among the most successful scientific theories in the history of physics.Predicts the outcomes of physical experiments with extraordinary precision, has enabled the development of modern technologies, and forms the foundation of contemporary microphysics science.Despite its empirical success for over a century, quantum mechanics continues to lack a unified and ontologically coherent interpretation.Although its mathematical formalism is rigorously formulated and exceptionally successful in predicting experimental results, there remains profound disagreement about the nature of the reality that quantum theory describes, particularly from an ontological perspective.This article argues that Aristotelian concepts of form, potentiality, and actuality provide a coherent ontological framework for understanding key quantum phenomena, such as superposition, the wave function, and its collapse, without recourse to epistemological idealism, many-world interpretations, or ad hoc metaphysical constructs. Moreover, this approach not only addresses foundational interpretative issues within quantum mechanics but also reconnects the theory with the broader ontological tradition of Aristotelian metaphysics. By doing so, it opens the way toward a unified metaphysical vision in which modern physics and classical philosophical categories are brought into mutual intelligibility.The Aristotelian ontology offers a natural way to understand the quantum state as a mode of being, a reality existing in potentiality, becoming actual upon measurement, without denying the genuine ontological status of potentiality itself.From this perspective, quantum theory no longer appears ontologically paradoxical, but instead emerges as a challenge to rethink the very foundations of what we consider to be real. Aristotelian ontology proves to be so naturally aligned with the ontological demands of quantum theory that it requires no ad hoc constructions or revisions. Rather than departing from Aristotle’s original insights, I find that they can be fully and fruitfully applied, without distortion, to the most perplexing phenomena of modern physics.Moreover, the Aristotelian approach enables us to interpret some paradoxes that appear only as a consequence of ontological reductionism, not as failures of understanding or imagination.