Athlete-students who are faced with both their athletic and academic demands may identify more strongly with their academic or athletic role, depending on a number of influential factors. The aim of this study is to examine the effects of self-efficacy, gender and age of athletes-students on their academic achievement. The data were collected from a total of 980 university licensed athletes-students studying at the university's faculty of sports sciences. The results showed that high self-efficacy levels of athlete-students were an important predictor of their academic success. As the age of the athletes increases, their academic success rate increases; It was found that female athlete students were more likely to fail than male students. Another result was that as the athletes' perceptions of being confident in their abilities increased, the probability of being academically successful increased. These results revealed that age, gender and being confident about their abilities are a determinant of academic success, and athlete self-efficacy is an important factor in the academic success of students during their education period. It can be said that the results of the research are an important factor in guiding future research and educational prevention and intervention efforts for athletes.