Background: Around 20% of birthing women report high levels of childbirth fear. Fear potentially impacts women's emotional health, preparation for birth, and birth outcomes. Evidence suggests that personal and external factors contribute to childbirth fear, however results vary. Aim: To identify pyscho-social factors associated with childbirth fear and possible antenatal predictors of childbirth fear according to women's parity. Method: 1410 women in second trimester and attending one of three public hospitals in south-east Queensland were screened for childbirth fear using the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ). Other measures included the Edinburgh Depression Scale (EPDS), Decisional Conflict Scale (DCS) and items from the EuroQol (EQ-5D) targeting Anxiety/Depression and Pain/Discomfort. In addition items measuring a previous mental health condition, social support and knowledge were used. Preferred mode of birth was also collected. Psycho-social factors were analysed to determine associations with childbirth fear. Multivariate analysis was used to determine predictors of fear. Results: Thirty-one percent (n = 190/604) of nulliparous and 18% (n = 143/782) of multiparous women reported high fear levels. Having a mental health history, desiring a caesarean section, reporting moderate to high pain during pregnancy, having a non-supportive partner and perceiving less childbirth knowledge than peers, were associated with childbirth fear. Standard multiple regression analyses by parity determined that depression, decisional conflict, low social support and less perceived knowledge predicted levels of childbirth fear. The model explained 32.4% of variance in childbirth fear for nulliparous and 29.4% for multiparous women. Conclusion: Psychosocial factors are significantly associated with childbirth fear. The identification of predictive psychosocial factors for childbirth fear indicates the importance of observing, assessing, and developing support strategies for women. Such strategies are required to decrease anxiety and depression for women during pregnancy, promote normal birth, and build social support to improve women's feelings J. Toohill et al. 532 and positive expectations of birth.