In order to be autonomous, teachers should enjoy teaching and be satisfied with their teaching. Teacher autonomy, therefore, may be related to teacher burnout and job satisfaction. The present study investigated the relationship between job satisfaction, teacher burnout, and teacher autonomy. Two hundred and seven language teachers at language institutes in Karaj and Tehran were given three questionnaires to complete. Convenience sampling was used to select language teachers in this study, and IBM SPSS (version 22) was used to analyze the data. Three non-parametric statistical tests were used to analyze the collected data. According to the findings of this study, job satisfaction had a weak negative relationship with teacher burnout, and teacher autonomy correlated negatively with job satisfaction. Moreover, no relationship between teacher autonomy and teacher burnout was found. Although the findings should be interpreted with care because of sample size, the paper ends with implications for language teachers and policy makers.