Digital transformation (DT) has become a strategic necessity for enterprises aiming to remain competitive in rapidly changing technological landscapes. However, organizations struggle to evaluate their digital maturity due to fragmented frameworks, inconsistent metrics, and varying industry contexts. This paper proposes a comprehensive theoretical framework for measuring Digital Transformation Maturity (DTM) by integrating technological, organizational, strategic, cultural, and ecosystem variables. Through an extensive synthesis of existing models, digital capability theories, and socio-technical principles, the study introduces a five-dimensional Digital Transformation Maturity Framework (DTMF). Each dimension is explained in detail, supported by diagrams, maturity stages, and measurable indicators. Theoretical grounding is provided using Resource-Based View (RBV), Dynamic Capability Theory (DCT), and Organizational Learning Theory (OLT). The paper concludes with reflections on model applicability, limitations, and future research directions.