The study aimed at identifying the level of positive psychological capital in supporting performance in the Palestinian private universities.  The study was applied in Gaza University as a case study.  To achieve the aims of the study, a descriptive analytical approach was used, and a questionnaire was utilized for data collection. A complete census approach was used to handle the study population (107 employees).  The study comprised the entire administrative staff (59), and the permanent academic staff (48).  The study reached a number of important results the level of positive psychological capital among Gaza University employees was (82.40%) (high), and that performance level had a weight of (70.798), which was also high.  The study also revealed the relationship between positive psychological capital and the level of supporting performance in Gaza University, which was revealed in the positive effect of the positive psychological capital on performance where (38.20%) of the change was attributed to the change in the variable (positive psychological capital).  The rest of the percentage was attributed to other factors.  The study provided recommendations that support positive psychological capital and its role in enhancing performance in Palestinian private universities in general, and in Gaza University in particular.