BACKGROUND Adverse childhood experiences (ACE) result in somatic and mental health disturbances. Their influence on antenatal depression is scarcely studied. This study examined the association between experience of ACE and antenatal depressive symptomatology. METHODS 1257 women from 172 antenatal clinics in Sweden were surveyed during pregnancy and 1 year after delivery. Demographics, previous medical history and Edinburgh Postpartum Depression Scale (EPDS) were collected in pregnancy and postpartum and ACE 1 year postpartum. ACEs were partitioned into 10 categories. Statistical analyses used linear and logistic regression with EPDS score as main outcome measure. RESULTS 736 (58.6%) women reported at least one ACE category and 88 women (7%) reported five or more ACE categories. An EPDS score of ≥13, which qualifies for a probable depression diagnosis, was reported by 277 (23%) women. In simple regression analyses the EPDS score was positively associated with the number of ACEs, cigarette smoking before pregnancy, body mass index and psychiatric disorders, whereas education level was inversely associated. In a multiple regression analysis, ACEs, education level and psychiatric disorder remained associated to the EPDS score. Among women with an ACE score ≥5, the odds ratio of having an EPDS score indicating probable depression was 4.2 (CI 2.5-7.0). CONCLUSIONS ACE was commonly reported. ACE and depressive symptomatology in late pregnancy were strongly associated in a dose-response manner. Women with several ACEs had high odds of depressive symptomatology in late pregnancy and were more likely to report depressive symptoms both in late pregnancy and postpartum.