This study aims to reveal whether there is a meaningful difference between preservice teachers' self-efficacy levels and their tendencies towards lifelong learning and the relationship between them according to gender and grade. The sample of the study based on correlational survey model consisted of 242 preservice primary school teachers at Gazi Faculty of Education in Gazi University. "Self-efficacy Scale" and "Lifelong Learning Tendency Scale" were used for data collection. While preservice primary school teachers' self-efficacy levels were found above the average in general, there was no meaningful difference according to gender and grade. Preservice teachers' tendencies towards lifelong learning were found high, but did not change according to gender. Freshmen preservice teachers' tendencies were found higher. There is a medium-level (0.53), positively meaningful relationship between preservice teachers' self-efficacies and their tendencies towards lifelong learning. Results of the analyses also reveal that 28.00% of the total variance regarding tendencies towards lifelong learning is explained with self-efficacy beliefs.