This study aims to determine the effect of principal leadership and teacher work motivation on teacher performance. This type of research is quantitative. Data obtained by survey method, namely by distributing questionnaires as a research instrument. This research was conducted at SDN Sungai Lilin, Musi Banyuasin District, Indonesia. The research sample was 49 teachers. Data were analyzed using correlational analysis techniques and multiple regression. The results of the study concluded: (1) there is a significant influence of principal leadership on teacher performance; (2) there is an effect of teacher work motivation on teacher performance; and (3) there is a joint influence of principal leadership and teacher work motivation on teacher performance.