The aim of this study was to explore if there is a significant difference between preservice teachers' academic self-efficacy perceptions and their gender, fields of study in high school and departments at their university. The study was carried out through descriptive survey model, one of quantitative research models. The sample of the study consisted of 653 freshmen preservice teachers in the Faculty of Education at Gazi University. Convenience sampling method was used in the study. Percentage, frequency, arithmetic mean, standard deviation, Kruskal-Wallis and t test were used in the analysis of the data collected via "Academic Self-Efficacy Scale". Findings reveal that there is no significant difference between preservice teachers' academic self-efficacy levels and their gender, fields of study in high school and departments at their university. Findings also indicate that preservice teachers' academic self-efficacy levels are in "partly sufficient" range. [Paper presented at the International Curriculum and Instruction Congress (6th, Kars, Turkey, October 11-13, 2018).]