This research aimed to investigate the partial and simultaneous effects of self-awareness and peer environment on the disciplinary level of college students. This quantitative study used the correlational descriptive method. The sampling used a proportionate stratified random sampling technique and resulted in 60 students as the sample. The data collection employed a questionnaire. The data analysis used multiple linear regression and utilized IBM SPSS ver. 25.0. The result of the study revealed that: 1) X1 partially affected Y (tcount 2,122 > ttable 2,002) with a significance value of 0,038; 2) X2 partially affected Y (tcount 2,245 > ttable 2,002) with a significance value of 0,029; and 3) X1 and X2 simultaneously affected Y (Fcount 7,487 > Ftable 3,159) with a significance value of 0,001. The result of this study showed the multiple significance of X1 and X2 towards Y was affected by a value of 20,8%, and the rest of 79,2% was affected by the other variables that were not explored in this study.