Introduction: The coach is the person who leads, teaches and trains athletes, but most often in addition to physical and technical preparation, the coach can also perform psychological preparation of athletes in order to perform better at the upcoming performances or competitions. In the behavior of coaches, we can recognize different styles that influence each athlete and the training process and affecting their effectiveness and self-evaluation. Aim: The main aim of the research is to determine the influence of the observed style of behavior of coaches on the perfectionism among athletes. Methodology: The sample of respondents consisted of 99 athletes, aged 19 to 25, who are engaged in team sports (basketball, football and volleyball), with average sports experience of 8.20 ± 3.86 years. They completed questionnaires of Competitive Perfectionism Scale (CPS) and Leadership Scale for Sport (LSS). Results: Mean and standard deviation scores for perfectionism were as follows, respectively: 26.07 & 3.55 for striving for perfection; 18.11 & 5.87 for a negative reaction to imperfection, slightly higher compared to other studies. Conclusions: The results of this study show that there is no statistically significant connection between the perception of the coach's behavior on the perfectionism of athletes and the need for further investigation of the causes, cohesion, and consequences of behavior of sports coaches on the behavior, efficiency, and development of athletes, different sexes, ages within various sports disciplines.