Background: Chronic low back pain (CLBP) patients often show a fear- and depression-related behavior with social retreat and less physical activity. Hence; the present study was undertaken for assessing the prevalence of anxiety and depression among chronic low back pain patients. Materials & methods: Study was conducted on 150 patients who were diagnosed to be suffering from CLBP that lasts longer than 12 weeks. Socio-demographic Performa were filled containing the basic information about the patient. Prevalence of anxiety and depression was assessed among CLBP patients. All the data were recorded and analyzed by SPSS software Version 17. Chi-square test was used for the assessment of level of significance. P-value of less than 0.05 was taken as significant. Results: The overall prevalence of anxiety and depression was found to be 29.17 percent and 21.67 percent respectively. While assessing the age and gender wise distribution of patients with anxiety, non-significant results were obtained. While assessing the age and gender wise distribution of patients with depression, non-significant results were obtained. Conclusion: CLBP patients are significantly affected by anxiety and depression. Hence; adequate psychiatric treatment should be started as soon as possible for improving the quality of life.