Abstract: This study investigates the correlations between academic performance and learner autonomy among Cambodian students studying English in higher education among 108 respondents. The quantitative method was employed in this study. The results revealed high positive correlations between learner autonomy and academic performance—which was statistically and respectively significant [ r= 0.74, N=108,p<0.01]. This finding implicated that learner autonomy strongly correlates positively with academic performance. The findings of this study suggest several pedagogical implications; learner autonomy plays a crucial role in promoting academic performance. The more substantial learner autonomy, the higher academic performance.