The main purpose of this study is identifying project success factors that influence humanitarian projectimplementation success by Goal Ethiopia. project implementation is complex and risky. Research has been done for humanitarian project implementations in numerous environments but there is a serious gap in the literature regarding implementation success in the Ethiopia context. Besides, project implementation characteristics that can be used to gauge levels of project success, with emphasis on those that may be unique to humanitarian activities in this research, the researcher had investigated project implementationby Goal Ethiopia. The evaluation was based on CSFs (Critical Success Factor) which cited as index for success of ERP implementation in others project implementation researches. Explanatory research design was used for the study, with a quantitative study methodology to analyze an institution that implements projects. The target population was 132 Human resource Personnel out of which convenience sampling technique was used to select a sample size of 60. Data was collected by using questionnaire at project implementation levels of the organization. The data collected was analyzed using statistical Package for Social Sciences. The study found that CSFs, human resource competency and communication and consultation of stakeholders has significant relationship with successful humanitarian project implementation by Goal Ethiopia. This study demonstrated that success factors have indeed evolved according to the type of project and the environment that the project is operating. The researcher recommended for other organizations to consider the five Critical Success Factors while implementing humanitarian project in order to realize implementation benefit. Furthermore, practical implications to Goal Ethiopia and future studies highlighted