A PISA Data 2018 Analysis: Do Parents' Education and Students' Learning Supports Affect Learning Achievement? Objectives: This study aims to determine the effect of parents' education level and students' learning supports on students' academic achievement. Methods: A quantitative approach was applied carried out multiple linear regression analysis as the technique. The data was obtained from the result of Program International Student Assessment (PISA) in 2018. The sample size was 10.820 students from 397 schools in Indonesia. Findings: The results indicated: 1) fathers' level of education has a significant effect on learning achievement; 2) mothers' education level has a significant effect on learning achievement; 3) students' learning supports at homes have a significant effect on learning achievement; 4) parents' education level and students' learning support significantly affect students' learning achievement. Conclusion: Parents' education level and students' learning supports at home are the most essential factors on learning achievement because high education level of parents and satisfied learning supports enhance students' learning achievement in Indonesia.