A brand new chapter to this Edition of the Course Manual. Mental health plays a pivotal role in maternity care. This chapter explores both mental health conditions arising in pregnancy and pre-existing conditions and the wider considerations that are needed by all healthcare professionals when delivering safe and holistic maternity care. Key learning points: Understand the importance of assessing maternal mental health in pregnancy and the associated risks for adverse outcomes. Appreciate that maternal mental health screening is a shared responsibility for all those working within maternity services. Have an overview of common mental health issues in pregnancy, including both pre-existing and new-onset conditions. Understand the perinatal mental health services that provide support and guidance. Be aware of appropriate legislation. Recognise that inequity and inequality are associated with adverse perinatal mental health outcomes.