Contemporary philosophy and science lack a unified ontological framework capable of coherently explaining the relationship between consciousness, probability, and experienced reality. Existing models tend to privilege either material processes or subjective experience, resulting in persistent conceptual gaps around perception, indeterminacy, and the role of the observer.Current approaches - ranging from physicalism and idealism to information-based theories -struggle to integrate experiential reality with deeper structural mechanisms without collapsing into reductionism or metaphysical speculation. In particular, no widely accepted framework systematically distinguishes between foundational reality, the structural domain of possibility, and the rendered domain of experience.This paper proposes the Three-Circle Ontology, a meta-ontological model that organizes reality into three expression layers: Circle 1 (Source) as the nondual ontological ground, Circle 2 (Possibility-Code) as the structural field of latent configurations, and Circle 3 (Projection) as the domain of perceptual experience. Rather than treating consciousness, probability, and physical reality as competing primitives, the model positions them as functionally distinct but ontologically continuous layers of expression.The framework does not present an empirical theory, predictive model, or spiritual doctrine. Its scope is explicitly conceptual and structural, intended to clarify foundational assumptions underlying existing scientific and philosophical models.The primary contribution of this work is a coherent meta-ontological architecture that enables interdisciplinary dialogue while preserving strict boundary conditions and logical consistency.