Presented study deals with the position of project culture in frame of project oriented society. It describes the company and project culture, identifies the relation between them and accents the importance of project culture for the successful implementation of project management philosophy. Very important part of the study is to analyse of present impact of project culture on Czech project oriented societies. The primary aim is the confirmation of the hypothesis H1: Project culture rooted in all levels of the enterprises hierarchy of project oriented society is the essential of project management success, but the developed project culture appears in less than 20 % of project oriented societies acting on Czech market. This study is an output of the KEGA project No. 001DTI - 4/2015 supported by the Ministry of Education, Science, Research and Sport of the Slovak Republic.