This cross-sectional and population based study was carried out in four randomly selected Upazila of four districts of Dhaka division by the department of Obstetrics and Gynaecology of Dhaka Medical College Hospital (DMCH) and Bangabandhu Sheikh Mujib University (BSMMU), Dhaka, Bangladesh from October 2014 to March 2015 to detect the prevalence of Cervical Intraepithelial Neoplasia (CIN) among women in four Upazila of Dhaka division of Bangladesh. Married women ages between 25-55 years, mentally able to provide informed consent were recruited. Women with chronic illness, pregnancy and women with previous treatment for CIN were excluded from the study. During 6 months of study period, a total 1165 cases were examined. Most of the attendants were between 30-35 years. Muslim participants were more than Hindus (95.27% vs. 4.37%) and 0.34% attendants were from Christian religion. Among the participants majority (42.37%) of them were up to primary level. Most (98.45%) of the women were house wife and most (54.5%) of them had monthly family income between Tk. 5001-10000. It was observed that 6.5% of their husband had 2 wives and 1.2% had 3 wives. Regarding their living status, 90.6% were living together, 8.6% of their husband was living at their work place & 0.7% was living abroad. About 30.4% of their husbands were farmer others were businessman, unemployed, driver and other service holder. It was found that 67(5.8%) out of 1165 cases were diagnosed as VIA +ve cases. Among 1165 cases 94.2% were normal, 4.7% were diagnosed as CIN I, 1% were CIN II and none of them was CIN III. Colposcopy guided punch biopsy were taken from all CIN cases and found that among 67 cases of colposcopically diagnosed CIN, histopathologically 28(2.4%) cases were diagnosed as normal, 32(2.7%) cases were CIN I, 4(0.3%) cases were CIN II & 3 (0.3%) cases were CIN III. In this study, crude prevalence of CIN I, CIN II and CIN III were 2.7%, 0.3% and 0.3% respectively. This study provides the first population-based prevalence of CIN in Bangladesh which will guide the Government of Bangladesh to upgrade the activities of already existing cervical cancer screening programme.