The main purpose of this study was to investigate the effect of procurement practices onrnperformance of projects implemented by Save the Children International Ethiopian Country Office.rnThe principle question to be addressed by this study was â€˜How does procurement planning affectrnsuccessful implementation of projects by SCI-Ethiopia CO? How does the vendor selectionrnprocess affect the successful implementation of projects by SCI-Ethiopia CO.? What is the rolernof contract performance monitoring and control in the successful implementation of projects byrnSCI-Ethiopia CO.? How do procurement negotiations contribute to the successful implementationrnof projects by SCI-Ethiopia CO.? What kinds of relationship between procurement practices havernwith the success of projects in save the children international? â€˜To answer these questions and tornachieve the primary objective of this study the researcher used quantitative researchrnmethodology. The total study population was 222which are staffs of SCI Ethiopia Co.; thernpopulation was divided into two main strata based on their functional unit they work namely;rnproject staffs and Supply Chain unit staffs with a representative sample of 149 taken. In this studyrnquestionnaire was the primary research instrument. A pilot test was done and it was found thatrnthe respondents understood the questions well and were comfortable in answering them. Therndata was coded as per the objectives to give distinct differences and linear regression done tornlook at the relationship of the variables. Presentation also was done through their calculated meanrnthe standard deviation. The study found that indeed various procurement practices affect thernsuccessful implementation of projects at SCI Ethiopia CO. among those Procurement planning,rnand competitive vender selection are the major once and they have significant effect on thernperformance of projects. The study recommended that the senior management team and thernsupply chain unit along with the operations department in SCI Ethiopia CO, should focus onrnimproving the procurement practices which are implemented in this organization to increase theirrnpositive effect on performance of projects and to maximize the leverage of the procurementrnpractices on the successful performance of projects and to give maximum benefit to thernbeneficiaries.