Background: One of the major problems in developing countries is the increasing growth of population which in fact is a serious threat for the global community. Modern Contraceptive use allows people to attain their desired number of children and determine the spacing of pregnancies. The main objective of this study is to assess the Prevalence of modern contraceptive utilization and associated factors among women of reproductive age from 36-49 years in Ethiopia. Methodology: A community based, cross-sectional study was employed from January 1 to June 30, 2016, among women of reproductive age from 36-49 years in all regions of Ethiopia. A multi-stage sampling procedure was used to select 3260 study participants. A pretested structured questionnaire was used to collect data, and data collectors who had completed high school were involved in the data collection process. A bivariate, multivariable logistic regression model was fit and statistical significance was determined with odds ratios and 95 % confidence level. Before preceding data analysis, the necessary assumptions for the application of multiple logistic regressions was checked by Hosmer and Lemeshow Test through forward LR method. Result: The overall modern contraceptive prevalence rate was found to be 17%. Being wealthy (Adjusted Odds Ratio=4.120 95%CI (2.853, 5.949), higher educated (Adjusted Odds Ratio =3.329, 95%CI (2.065, 5.368) and having more numbers of living children (Adjusted Odds Ratio =1.714, 95% (1.328, 2.212) was significantly associated with use of modern contraceptive methods. Conclusion: The utilization of modern contraceptive method was low. Contraceptive utilization was associated with some socio-economic and socio-demographic factors like age, educational status, women wealth index and number of children. Therefore, expanding contraceptive services confers substantial benefits on women, their families and society. All stakeholders, including the Ethiopian government and the private sector, should increase their investment in modern contraceptive services Keywords: modern Contraceptives use, Associated Factors and Women