Objective: This study aimed to assess factors associated with knowledge on obstetric danger signs among women who gave birth within 1 year in North West, Ethiopia., Results: Overall, 37.9% of the respondents were knowledgeable. Women mention three and more key danger signs during pregnancy and after delivery were 15% and 18.5% respectively. Decision making power of women [AOR = 1.59, 95% CI 1.10, 2.29], starting antenatal visit lately [AOR = 3.1, 95% CI 1.63, 6.33], housewife [AOR = 2.15, 95% CI 1.25, 3.68], merchant [AOR = 2.01, 95% CI 1.05, 3.88], and government employees [AOR = 2.75, 95% CI 1.38, 5.49] were among the predictors of knowledge on obstetric danger signs.