Fear of childbirth (FoC) and its extreme form, tokophobia, is a clinical condition that can lead to many negative consequences, and its importance is increasingly understood. This article aims to assess the severity of FoC and anxiety levels according to different attachment styles and to investigate the relationships between these factors. A cross-sectional study was conducted in a state hospital in the largest city in Turkey. Three hundred pregnant women attending the Antenatal Outpatient Clinic were included. A sociodemographic questionnaire, Wijma Delivery Expectancy/Experience Questionnaire-version-A (W-DEQ), Spielberger State-Trait Anxiety Inventory and Adult Attachment Style Scale were administered. 8.1% of participants had tokophobia (W-DEQ sum score ≥85). FoC was significantly higher in pregnant women who had a history of pregnancy loss and past psychiatric history. For multiparous women, adverse birth outcomes were also associated with higher FoC. State and trait anxiety were positively correlated with FoC levels. Regarding the attachment patterns, pregnant women with avoidant attachment styles presented with higher levels of FoC than those with secure attachment styles. In logistic regression analysis, higher anxiety levels, adverse birth outcomes, and insecure attachment styles were found to predict severe and clinical FoC. FoC has a considerable effect on pregnant women, albeit at different clinical levels. Adverse birth outcomes, high anxiety levels, and insecure attachment styles were associated with higher FoC. Therefore, antenatal patients with adverse birth outcomes and higher anxiety levels, which are risk factors for FoC, should be carefully evaluated in terms of tokophobia and referred to mental health professionals when necessary.