Lean Six Sigma in Public Sector Procurement: A Framework for Cost Efficiency and Transparency” explores how Lean Six Sigma methodologies can enhance procurement processes in the public sector. With governments facing increasing pressure to improve efficiency, reduce costs, and ensure transparency, this report examines how data-driven decision-making, waste reduction, and process optimization can transform procurement operations. It delves into best practices, case studies, and implementation strategies, providing a roadmap for policymakers and procurement professionals seeking to minimize inefficiencies, eliminate fraud, and drive accountability. By integrating Lean Six Sigma principles, public institutions can achieve faster procurement cycles, better resource allocation, and improved service delivery. This report serves as a valuable guide for organizations aiming to modernize procurement while upholding the highest standards of integrity and performance.