INTRODUCTION Oral health is essential for psychosocial well-being and general health. For expectant mothers, pregnancy increases the risk of oral diseases and has a subsequent impact on the oral health of a child once born. Midwives are in charge of pregnancy monitoring, childbirth and newborns' first days of life. They could have an important role in prevention. However, limited studies evaluating the knowledge, attitudes and practices on oral health among midwives have been conducted in Europe. METHODS We performed a cross-sectional study using a self-administered questionnaire. Two local midwifery associations sent out the questionnaire by email and social media networks to all registered midwives and practicing in the department of Herault (n=613), between April and May 2022. Statistical analyses on quantitative data and descriptive analyses of qualitative free-text responses were performed. RESULTS In total, 167 midwives were included. We found a lack of knowledge on many oral health topics and this was stated as the main reason that only 29% of midwives provided oral health information to their patients. Only 30% of the midwives had a training module on oral health during their initial training, and less than half of them considered the training adequate. To improve their lack of knowledge, participants expressed a preference for digital communication methods for themselves; however, they favored in-person interaction for public interventions. CONCLUSIONS This study showed a lack of training and knowledge about oral health among midwives and a lack of oral health discussion with expectant mothers who are a high-risk population for oral diseases.