Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 4 3-4 2020 07 01 81 85 Fazel Dehvan Department of Nursing, School of Nursing and Midwifery, Kurdistan University of Medical Sciences, Sanandaj, Iran Sahar Dalvand Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Keivan Mirhassani Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran Mitra Amini Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran Soran Hosseini Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran Parinoush Kheirabadi Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran Reza Ghanei-Gheshlagh Spiritual Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran 2019 07 04 Background and Objective: Sleep disorder is highly prevalent among students and can cause neurological, behavioral, and physiological changes and academic decline. Current study aimed to evaluate the association between depression, anxiety, and stress with sleep quality in nursing students of Kurdistan University of Medical Sciences, Sanandaj, Iran. Materials and Methods: This cross-sectional study was performed on 204 nursing students selected by convenience sampling method. Data were collected using demographic characteristics form, Pittsburgh Sleep Quality Index (PSQI), and Depression, Anxiety, and Stress Scale (DASS-21). Data analysis was performed by SPSS software. Results: In this study, 115 participants (56.4%) were female and 84 students (41.2%) had poor sleep quality. The results indicated a significant and positive correlation between sleep quality score and depression (r = 0.492), anxiety (r = 0.391), and stress (r = 0.414). Moreover, there was a relationship between the mean score of sleep quality with de-pression and part-time job of students (P < 0.05). Conclusion: The results of multivariate regression demonstrated that by increasing one unit in depression score and part-time job in students, sleep quality score increased by 0.238 and 1.850 units, respectively. According to the results of the study and concerning the relationship between students' part-time job and depression with sleep disorders, provi-sion of special interventions to enhance sleep quality in students seems necessary. https://jss.tums.ac.ir/index.php/jss/article/view/136