Nursing theories have a significant impact on healthcare policy and practice by informing guidelines, standards, and legislative initiatives that promote quality care. Theoretical frameworks can guide policymakers in developing regulations that support evidence-based nursing practices and enhance patient care outcomes. For instance, theories that emphasize cultural competence, such as Leininger’s Cultural Care Theory, can influence policies aimed at reducing health disparities among diverse populations. Additionally, nursing theories can serve as the foundation for research that evaluates the effectiveness of various practices and interventions, leading to the development of best practices in nursing care. By advocating for the integration of nursing theories into healthcare policy, nurses can help shape a healthcare system that prioritizes quality, equity, and holistic patient care.