The focus of this study was on the impact of project management practices on organizational performance in NGOs. The measurement of organizational performance was measured using project performance; three criteria for measuring project performance were identified for their widespread application in project management definition and general understanding amongst practitioners. These included: time, cost and quality criteria. Questionnaires were used to collect data within the selected NGOs to assess the level of importance of linking various project management practices in order to realize greater organizational performance. The questionnaires were also used in establishing which project management practices significantly influence organizational performance and measured time, cost and quality performances of projects of the organization leading to greater organizational performance. Analysis of the impact of project management practices on organizational performance was done using confirmatory factor analysis (CFA) and structural equation modelling (SEM) data analysis using SPSS 20 and AMOS version 23 to determine the relationship between the significant project management practices and organizational performance. The key findings from the research were that it was important to link the various project management practices to realize successful completion of projects leading to better organizational performance. It was also discovered that all project management practices were found to be significant to realize better organizational performance however project cost management followed by project scope management were the most significant. Time performance lagged behind whereas the cost and quality performance trends were generally as expected and very important in realizing improved organizational performance. The study showed that engaging in project management practices had a positive impact on organizational performance as benefits accrued improved organizational performance. The study finally provided recommendations for improvement in project management practices and more organization performance metrics recently developed in other research works like benefit to end users, benefit to national infrastructure should be included for performance measurement. Recommendations were also made on areas for further studies on adoption of project management practices in all sectors in addition to the NGOs.