A Dissertation Submitted on Partial Fulfillment of the Requirements for the Degree of Masters of Science in Procurement and Supply Chain Management (MSc-PSCM) of Mzumbe University.The general objective of the study was to assess the role of strategic supply chain management in ensuring successful completion of public projects. A case of Tanzania Buildings Agency Head Quarters; The study was guided by four specific objectives which were to determine cost reduction approaches in ensuring successful project completion in the public sector, to find out the accuracy of management of information in ensuring project completion in public sector, to examine the relationship between the flow of physical materials and project completion of the public sector and to determine the order processing management in ensuring project completion in the public sector. The study used descriptive research design in describing the role of supply chain management in ensuring successful project completion public sector. The sample size was achieved through convenience sampling proceedings and the researcher obtained 45 respondents who were the employees from Tanzania Building Agency (TBA). Data were collected through questionnaires whereby the researcher provided the employees the questionnaires, interview methods in which the researcher conducted interviews with the management representatives and documentary review sources from various organization reports and journals that have a direct and indirect relationship to the study. Data collected were analyzed quantitatively through descriptive analysis and it was aided with Statistical Package for Social Science (SPSS). The findings of the study show that costs management approaches are used by the organization and they are in line with the strategic role of the supply chain in the organization while order processing management had a closer relationship with information management within the supply chain members. The study concluded the strengthen costs management approaches emphasis in the supply chain, the flow of materials in accordance with the requirements and information provided by the members. The recommendations were more unique strategies that should be formulated and implemented basing on the supply chain costs, information flow, and physical flow of materials in the chain.