This study aims to analyze the influence of work motivation and principal supervision on teacher performance at SMK YPE Sumpiuh. This study uses a quantitative method. The data used in this study is primary data obtained through questionnaires. https://www.nacrack.com/mega-choice-2005-2006-NISSAN-ALTIMA-Radio-Receiver-AM-FM-stereo-single-CD-Player-G-mega-value/