The aim of this study was to test a theoretical model of the mediating role of self-esteem in the relationship between academic procrastination behaviour, dysfunctional attitudes and depression. The sample comprised 615 female (71.3%), 242 male (28.1%) and 5 undergraduate students who did not specify their gender (0.6%), who were attending a state university located in the northern region of Turkey. Data were collected using the Personal Information Form, Academic Procrastination Scale, Dysfunctional Attitudes Scale, Beck Depression Inventory and Rosenberg Self-Esteem Inventory. Dysfunctional attitudes, depression and self-esteem were found to explain academic procrastination.