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Introduction: Ovarian cancer is ranked third most frequent female cancer in India. The incidence varies between 2. 2 to 7. 8 per lakh population in various parts of India and there is steady increase in age standardized incidence rate of ovarian carcinoma. 1 The present study was aimed to evaluate the histomorphology of epithelial ovarian tumors and to find the relationship between serum CA-125 levels with histopathology and staging of these neoplasms. Material & Methods: 105 cases of surface epithelial ovarian tumors were evaluated over a period of one year from July 2018 to June 2019 in the Department of Pathology I.G.M.C Shimla. Preoperative serum CA125 levels were noted .Malignant tumors were staged using FIGO staging. Results: Serous tumors were the most common tumors reported in the study constituting 67 cases (63.8%). Benign tumors (64.76%) comprised the major group followed by malignant tumors (29.52%) and borderline tumors (5.7%).. Serum CA125 concentration in benign, borderline and malignant tumors were compared and statistically significant difference was found (p=0.000). CA125 showed positive correlation with the stage (p=0.024) of ovarian cancer. However no significant correlation was found between subtype of benign, borderline and malignant tumors with serum CA125 levels. Conclusion: Patients with borderline /malignant epithelial tumors had higher preoperative serum CA125 value as compared to benign ovarian tumors.