Background: Polycystic ovarian syndrome (PCOS) is the most common cause of hyperandrogenism anovulatory infertility; it affects 5-10% female reproductive age. The present study aims to investigate the total prostate specific antigen levels, total serum testosterone, FSH and LH in women with PCOS and compare the results with control group of normal fertile females of corresponding age group on Iraqis PCOS patients. Materials and Methods: Seventy patients with PCOS diagnosed depending on three criteria: Menstrual history: Oligomenorrhea, Ultrasound reveals polycystic ovaries and Biomedical and/ or clinical hyperandrogenism. Twenty normal fertile females who serve as control group in this study. Blood samples were aspirated from all individuals from 2-4 day of menstrual cycle to measure total prostate specific antigen(PSA), total testosterone and FSH, LH. Results: Patients with PCOS and controls differed significantly in PSA, Total serum testosterone (p<0.05). Patients with PCOS and controls have highly significant difference in LH level, the mean was (7.88±1.83 vs 3.90±0.73) respectively highly significant difference in LH/FSH ratio and BMI parameters (p<0.001). No significant differences were found in FSH (p>0.05). Positive correlation between PSA and testosterone, PSA and BMI. Conclusion: Total serum prostate specific antigen levels are higher in patient with PCOS. Total testosterone levels are higher in patient with PCOS. Serum PSA measurement might be marker of hyperandrogenism in females suffering from PCOS.