This study aims to analyze the effect of teacher professionalism and principal leadership on teacher performance. The research was conducted in 23 public elementary schools in Kunto Darussalam District, Rokan Hulu Regency, from March to May 2020. The population in this study were all civil servant teachers in SD Negeri Kunto Darussalam Subdistrict, Rokan Hulu Regency, totaling 222 people. …