Abstract :

This research seeks to show the importance of Risk Management (RM)and Knowledge Management (KM) for Project Success (PS) and investigating the mediating role of Project Management Performance (PMP). Online questionnaire was distributed to 220 project managers among all 200 Jordanian first class construction companies. The data from 165 respondents was checked and coded for statistical analysis using Structural Equation Modeling (SEM) with Analysis of Moment Structures software (AMOS,20) and Statistical Package for the Social Sciences software (SPSS,20).The results indicated that RMand KMhave significant positive effects onPMP andPS.  Moreover, PMP was found to have significant positive effect on PS. The results showed that PMP was the strongest predictor of PS while the strongest predictor of PMPwas RM.From the results of mediation analysis, it was found that PMP partially mediates the effects of RMand KM on PS.The study recommended that Jordanian construction companies to consider seriously RM and KM in their projects since that will protect the projects from failure such as completion delay, overrun, low quality or safety incidents.in addition, the construction companies have to pay more attention for project management training and using of the best practices of project management which will improve the overall organization performance.