This research is motivated by the problem that there are still referees who do not know about the philosophy and their role as volleyball referees, besides that volleyball referees should continue to develop themselves in terms of their knowledge and duties as referees by continuing to practice in leading matches or taking refereeing courses or upgrading. This study aims to determine the volleyball referee's knowledge of the philosophy and role of the referee in a match. This research method uses descriptive quantitative research with survey techniques. The instrument used in this study is the google form. The subjects of this study were 17 volleyball referees with licenses varying from regional to national. The results showed that the level of knowledge of the referee in the low category was 1 person, amounting to 5.88%, the medium category was 4 people, amounting to 23.52%, the high category was 11 people, amounting to 64.70%, the very high category was 1 person, amounting to 5.88%. The conclusion is that a volleyball referee should know the philosophy of being a referee, namely as a judge, and also his role in a match is a leader.