This study determined the effect of teacher work motivation and principal leadership on teacher performance. This research uses quantitative methods with correlational research type. This research is a population study with 61 research subjects, namely teachers of public elementary schools in Gugus 03 Muara Telang. The data collection technique used a questionnaire. Data were analyzed using correlation analysis techniques and multiple linear regression. The results showed that: (1) teacher work motivation has a positive and significant effect on the performance of teachers at SD Negeri Gugus 03, Muara Telang District; (2) Principal leadership has a positive and significant effect on teacher performance at SD Negeri Gugus 03, Muara Telang District; (3) Teacher work motivation and principal leadership together have a positive and significant effect on teacher performance at SD Negeri Gugus 03, Muara Telang District.