Public Private Partnership (PPP) is a project delivery system is preferred by the countries that do not have sufficient infrastructure and financial resources to complete necessary infrastructure investments. This project delivery system has become a very popular method in Turkey in recent years. This method has advantages compared to other project delivery systems, however, there are also arguments against this system in the literature. Moreover, due to the complexity of the system compared to the traditional delivery systems, more critical factors affecting the success of these projects are required to be pondered. Therefore, the identification of the critical success factor (CSF)'s in PPP projects is very important in order to exploit the public resources effectively. Although there are numerous researches about this subject, these researches are performed by considering a specific country. Therefore, a study conducted by considering the factors specific to Turkish market is of great importance for the success of PPP projects performed in Turkey. In order to identify the CSFs of these projects, a triangulation method is used. Firstly, the literature survey and semi-structured interviews are performed and 54 CSFs are identified at the end of this process. A questionnaire is prepared based on these CSFs, and 89 valid data is collected at the end of the questionnaire survey. This data is analyzed by using factor analysis, and 10 factors are identified at the end of this analysis.