This document presents a framework for assessing governance of health systems in developing countries. It discusses that governance is a key determinant of development outcomes and defines health system governance as the actions and means adopted by a society to organize itself to promote population health. The framework assesses governance based on nine principles: strategic vision, participation, rule of law, transparency, responsiveness, equity, effectiveness/efficiency, accountability, and intelligence. Governance is assessed at the national, policy formulation, and policy implementation levels using various information sources. The goal is to raise awareness of governance issues, inform policy, and identify financial costs of improving health system governance.