ABSTRACT Background: Contraceptive use prevents unintended pregnancies, abortions and deaths related to pregnancy and childbirth. Because of an unintended pregnancy, there was a child as well as maternal mortality and morbidity. Hence, reducing unmet need among women can assure to reduce maternal and children's health risks related to pregnancy by increasing contraceptive use. In Ethiopia, Contraceptive prevalence rate was still low and unmet need for contraception was higher than developed countries. Assess problems associated with unmet need for contraception and determinants of unmet need are essential. Objective: The objectives of this study was to assess the status of unmet need and investigate determinant factors for unmet need for contraception among married women with unmet need among married women reproductive age women in Ethiopia based on 2016 EDHS. Methods: This study was a cross-sectional design using the quantitative research approach, data obtained from 2016 EDHS women’s file (IR). To analyze the data bivariate and multivariate techniques of data analysis were applied. Bivariate Chi-square test was employed to see the association between the independent and outcome variable. A survey binomial and multinomial logistic regression fitted to identify determinants of the total unmet need for contraception and unmet need for spacing and limiting using STATA ver. 14.0 respectively. Result: The level of unmet need for contraception in Ethiopia was 25.3% (14.7% for spacing and 10.6% for limiting) is slightly smaller than the previous Ethiopian surveys. The logistic regression showed that place of residence, religion, wealth index, region, fertility preference, desire more children, number of living children and HEW visit in the last 12 months were a significant determinant predictor of total unmet need. And Women’s fatalistic thinking, breastfeeding, fear of side effects, postpartum and religious prohibition were the main and most frequently cited reasons for non-using contraception method. Conclusion: The total unmet need for contraception is still high. There should be an effort on reducing unmet need and improving the contraceptive prevalence rate. Especially there should be a national effort on rural women, older woman, a woman with five and above living children, a woman with low wealth and Muslim and catholic religious follower women. Key Words: Unmet need, Married women, Contraception, Determinant, Ethiopia