Purpose The study was conducted to determine the effect of clinical mentors on developing caring behaviors in nursing students. Design And Methods The present research was conducted using a mixed-method design and quasi-experimental pre-posttests (N = 14 Nursing Students). The Caring Behaviors Inventory-24 and a semi-structured interview form were administered. Findings As a result, five themes, humanism, caring, interpersonal caring relationship, caring behaviors, and motivation were determined. The postclinical interviews showed an increase in their caring behaviors compared with the previous interview. Practice Implications A clinical mentor, who is an expert in caring behaviors, has a positive effect on nursing students. Therefore, student nurses gain professional self-confidence and the quality of care and patient satisfaction increase.