Background Antenatal care (ANC) is the care given to pregnant women to prevent poor feto-maternal outcomes during pregnancy. The World Health Organization recommends first ANC visit be started as early as possible within in 12 weeks of gestation. Although there is improvement in overall ANC coverage, a sizable proportion of pregnant women in Ethiopia delay the time to initiate their first ANC visit. Therefore, this study aimed to investigate factors associated with late ANC initiation among pregnant women attending public health centers in Addis Ababa, Ethiopia.Methods A facility-based cross-sectional study was conducted among 407 randomly selected pregnant women who attended ANC at selected public health centers in Addis Ababa from December 2020 to January 2021. Data were collected using pretested and structured questionnaires through a face-to-face interview and reviewing medical records. Binary and multivariable logistic regressions were fitted sequentially to identify predictors for late ANC initiation. Adjusted odds ratios with 95% CI were computed to measure the strength of associations and statistical significance was declared at a p-value < 0.05.Resul tThis study showed that 47% of pregnant women started their first ANC visit late.The age of 30 years and above, being married, unplanned pregnancy, having a wrong perception about the timing of the first ANC visit, and not having ANC for previous pregnancy was significantly associated with late ANC initiation.Conclusion Nearly half of the women initiated their first ANC visit late. Tailored interventions aimed at promoting early ANC initiation should target married women, women with an unplanned pregnancy, women who perceived the wrong timing of their first ANC, and those who have no ANC for their previous pregnancy.