Several factors are important determinants of students achievement. Students positive perceptions about these factors contribute to their achievement. Considering importance of students perceptions about themselves, teachers support, and institutional climate in influencing their academic achievement, this study specifically examines students perceptions about themselves as learners, teachers support, and institutional climate for predicting their achievement. This research employed survey and correlational research designs. For this research, 372 students were randomly selected as a sample using cluster and stratified random sampling techniques. For data collection in this study, a questionnaire was adapted from Donahue (1994). For data analysis, both descriptive and inferential statistics were used, with help of SPSS. It was concluded from multiple regression analysis that university students achievement (i.e., dependent variable) can be significantly predicted from their self-perceptions, teachers support and institutional climate (i.e., independent variables).