The aim of this research was to investigate the relationship of perfectionism, stress and burnout in male and female swimming coaches. For this purpose, 154 coaches (85 men with the mean age of 30.52±5.26 years and 7.69±4.96 years of coaching experience and 69 females with the mean age of 28.82±5.16 years old and 4.46±6.40 years of coaching experience) were selected. For data collection, four questionnaires were used: Personal information, Hill et al. (2004) perfectionism, Coudron stress and Burnout questionnaire of Maslach and Jackson (1996). To analyze the data, descriptive statistics were used to design tables and diagrams and distribution indicators like mean, median and mode were used. Also inferential statistics were used at (P<0.05) to test the research hypotheses through variance, Pearson correlation and t test, and also spss and excel software were used for data analysis. The results showed a significant relationship between perfectionism and stress in female and male coaches (P<0.05). There was a significant relationship between perfectionism and burnout in female and male coaches (P<0.05). Also, there was a significant relationship between stress and burnout in male and female coaches (P<0.05). There was no difference between male and female coaches in perfectionism and burnout while there was a significant difference between male and female coaches in stress.