this study investigates the relationships between iranian efl teachers’ perfectionism, burnout and their teaching style preferences, and also the difference between male and female efl teachers and their teaching style preferences. to this end, a sample of 99 efl teachers (46 males and 53 females), who had years of teaching experience, were selected. the measurement scales used in this study were: a) ahwaz teachers’ perfectionism, a 27-item questionnaire, b) maslach burnout inventory, a 22-item questionnaire, and c) teachers’ teaching style preferences (grasha, 1994), including 40 items. for analyzing the gathered data between teachers’ perfectionism and burnout with their teaching style preferences, we used one-way anova. to see if there is any significant difference between male and female efl teachers and their teaching style preferences, the researcher ran a two-way chi-square test. the analysis showed: there is no significant difference between teachers perfectionism and teaching style preferences. also there was no difference between teachers burnout and their teaching style preferences. besides, it was found there is no significant association between male and female teachers teaching styles.