Background Intimate partner violence (IPV) continues to be a challenge in the 21st century. IPV is social problem stipulated with many sectors and affecting at multiple levels. The aim of the study was to determine magnitude and associated factors of intimate partner violence during pregnancy at selected hospitals in Addis Ababa. Methods Multicenter cross sectional study conducted. Four hundred twenty pregnant women attending Antenatal care selected from the hospitals in proportion to their client load from April 2021- May 2021. Data collected using modified standard questionnaire for IPV. Data analyzed using SPSS version 25. Descriptive statistics and multivariate binary logistic regression computed. Statistical testes were considered significant when P < 0.05. Result The magnitude of intimate partner violence in pregnancy was 48.6%. Women with no formal education (AOR = 7.73, CI = 2.18, 27.38), lack of occupation in women (AOR = 2.82, CI = 1.39, 5.69), intimate partners with primary education (AOR = 3.62, CI = 1.36, 9.66), intimate partner alcohol consumption (AOR = 4.45, CI = 2.34, 8.47), lack of financial freedom(AOR = 10.58,CI = 5.03, 22.24) and unplanned pregnancy (AOR = 6.78, CI = 3.76, 12.23) were factors associated with intimate partner violence towards pregnant women. Conclusion Almost one in two women studied were victims of some form of intimate partner violence during pregnancy. Lower educational status, intimate partner alcohol consumption, lack of economic freedom as well as unemployment and unplanned pregnancy were associated with