Background : Bacterial vaginosis (BV)is a polymicrobial clinical syndrome re sulting from replacement of the normal hydrogen peroxide producing Lactoba cillus sp. BV is the most common lower genital tract disorder among women of reproductive age (pregnant and non-pregnant) and the most prevalent cause of vaginal discharge and malodor. Objectives: To study the role of asymptomatic bacterial vaginosis on outcome in patients undergoing ICSI. Patients and Methods: This prospective study was undertaken in the High Insti tute of Infertility Diagnosis and Assisted Reproductive Techniques / Al-Nahrain University. During the period from September 2017 – April 2018. A total of 100 infertile women .All of them were underwent controlled ovarian hyper stimula tion for intra cytoplasmic sperm injection cycle. Antagonist oocyte maturation used as ovulation induction protocol in all the cases. Assessment of oocyte mat uration and embryo quality is done to the all the cases, bacterial vaginosis smear was collected on the day of oocyte retrieval. B.V. smear diagnosis by Amsel’s Criteria and Nugent’s Scoring. Results: TThere was no significant difference in mean age of pregnant and non-pregnant ladies, 29.40 ±6.47 years versus 30.78±6.84 years, respectively (P= 0.333).In addition the frequency of women under 35 years age was compara ble in the two groups with no statistical significant difference, 34 (79.1%) versus 33 (73.3%), respectively (P = 0.528). Wide variation and non-normal distribu tion was the role followed by the duration of infertility concerning sub-fertile women participating in this study. However, no significant difference was ob served in the duration of infertility between pregnant and non-pregnant ladies, 6.00 (5.00) years versus 6.00 (5.00) years (P = 0.289). Comparison of basal hor monal levels between pregnant and non-pregnant groups revealed no significant difference despite the presence of some minor differences in mean hormonal levels between the two groups (P> 0.05). Comparison of oocytes characteristics between pregnant and non-pregnant ladies was conducted and revealed no signif icant difference in mean total number retrieved oocyte (TNO), ruptured oocytes (RO), abnormal oocyte (AO), germinal vesicle oocyte (GV), metaphase I oocyte and metaphase II oocytes (P > 0.05), table Mean total number retrieved oocyte (TNO), ruptured oocytes (RO), abnormal oocyte (AO), germinal vesicle oocyte (GV), metaphase I oocyte and metaphase II oocytes was 10.81 ±4.95 versus