The study investigated the relationship between national competitive tendering and product quality management in Wakiso Local Government, Uganda. Employing a cross-sectional survey design, data was collected from 92 respondents comprising procurement officers, contract committee members, technical staff, and suppliers through structured questionnaires and document analysis covering the period 2019-2023. The results revealed a moderate positive correlation (r = 0.654, p < 0.01) between adherence to national competitive tendering procedures and product quality outcomes. Quality compliance rates improved from 61% to 79% during the study period, while procurement disputes decreased by 43%. The study found that transparent bidding processes, technical evaluation criteria, quality specifications in tender documents, and post-delivery inspections significantly influenced product quality. However, challenges including limited technical capacity for quality assessment, delayed payment to suppliers, and political interference constrained optimal outcomes. The study concluded that while national competitive tendering frameworks provided mechanisms for ensuring product quality, their effectiveness depended on rigorous implementation, adequate technical expertise, and institutional commitment to quality standards. The study recommended strengthening technical evaluation committees, implementing mandatory quality testing protocols, establishing supplier performance databases, enhancing staff capacity in quality management, and ensuring timely payment to contractors to maintain quality standards.