Teaching, as a profession, has professional ethics arranged in the teacher’s code of ethics. The code of ethics is a reference for teachers in carrying out their teaching assignments in class. Teachers’ teaching performance is the teachers’ achievements in planning, implementing, and evaluating learning activities. Ttheir study uses a quantitative approach. The variables studied were professional ethics (X) and teachers’ teaching performance (Y). The instrument used to measure the two variables was a questionnaire. The research respondents were 20 teachers of Junior High School in An Nur Malang Regency, East Java, Indonesia. To test the research hypothesis Pearson Product Moment Correlation was used. Hypothesis test results concluded that: there is a positive relationship between professional ethics (X) and teaching performance (Y) at Junior High School in An Nur Malang Regency, East Java, Indonesia, with a correlation coefficient of 0.498.