Teacher Professional Competence is effectd by individual factors, and outside the individual such as high and low culture in work so that it will have a good impact on the achievement of the teacher, work discipline and quality of work so that it makes the teacher's Professional Competence better. Factors from outside the industry such as situational leadership from the principal who can communicate and empower teachers to create good teacher professional competencies as well as the school's own work culture that is able to improve the quality of their own work as well as the habits of teachers in relationships with co-workers. This research is correlational descriptive research with path analysis. The research sample was 103 teachers. Data collection was carried out using instruments consisting of Situational leadership (26 items), Professional competence (23 items), work culture (22 items) and work communication (9 items) which have been tested for validity and reliability. This research instrument was tested for validity and reliability using the product moment person correlation test. The research data was analyzed using path analysis to see the direct and indirect effect between variables, by first conducting normality, linearity, and homogeneity tests. The results showed that there is a direct and indirect effect between situational leadership on professional competence, through work culture and work communication. The data analysis of this study used jalur analysis (Path Analysis). The results showed that there is an effect of situational leadership on teachers' professional competence through work culture and work communication, either directly or indirectly.