Background In developing countries, most maternal deaths are related to the lack of accessibility and availability of reproductive health services. In those nations, emergency contraceptive pills are the most commonly used family planning methods to prevent unintended pregnancy. However, women do not use this family planning method for different reasons. Consequently, women expose to unsafe abortion which results in maternal morbidity and mortality. Objective To assess the knowledge of and utilization of emergency contraceptive and its associated factors among women seeking induced abortion in public hospitals, Eastern Tigray, Ethiopia, 2017. Methods Hospital-based cross-sectional study was conducted on 380 women, who came for safe termination of pregnancy from April to July 2017. Systematic random sampling technique was used. Pretested structured questionnaire was used to collect data through interview. Data were entered using Epi Info version 7 and exported to SPSS version 20 for analysis. Data were presented using descriptive statistics. Bivariate and multivariate logistic regression was carried out to see if there was significant association between variables at P < 0.05 and 95% confidence interval (CI). Result Out of the total 369 respondents, 149 (40.4%) had the knowledge about emergency contraceptive pills. The magnitude of utilization of emergency contraceptive among respondents was found to be 45 (12.2%). Protestant in religion (AOR = 60.85, CI (5.34–693.29)), previous utilization of any contraceptive method (AOR = 0.13, CI (0.05–0.36)), and women who were not knowledgeable about emergency contraceptive (AOR = 0.030, CI (0.006–0.14)) were significantly associated with the utilization of emergency contraceptive. Conclusion Most of the women were not knowledgeable about emergency contraceptive and utilization of emergency contraceptive was also very low. In conclusion, religion, knowledge, and previous utilization of emergency contraceptive were associated with the utilization of emergency contraceptive.