Background: The intrauterine device (IUD) is the world's most widely used spacing method of reversible birth control. The aim was to assess the effect of an educational program on women's knowledge toward the intrauterine device. A Quasi experimental research design was used in carrying out this study. The present study was conducted in; El-Ahrar Hospital, Al-Nahal Medical Centre and Ghazala Unit and a purposive sample of 200 women (100 received an educational program about IUD) and 100 received the routine care of the health agency) were recruited for this study. Data collection tools consisted of; a structured interview sheet, assessment of women knowledge about IUCD sheet and assessment of believed rumors or misconceptions about IUCD, Results; revealed that 50.0% and 41.0% of women in both study and control groups were belong to age group of 25 to 34 years. 45.0% women in the study group were secondary school education and its 47.0% in control group. 52.0% and 54.0 % of women in both groups were rural. There were no statistically significant differences in reproductive and contraceptive history between two groups. The implementation of an educational program aimed at improving women’s knowledge related to IUD based on scientific background, and in the light of the needs identified in the pre-test assessment was successful in improving their knowledge and correction of believed rumors of IUD compared to the pretest. It can be concluded that, IUD was contraceptive of choice for women of most potential reproductive age group. Implementation of an educational program was associated with improvement in women's knowledge. The study recommended that, regular group education should be designed based on current scientific knowledge to impact correct and accurate knowledge about IUD. This is to avoid misinformation, wrong teaching and misbelieves that constitute the present structured teaching on IUD.