Background: As the spread of COVID-19 continues, the disease and its sequels affect antenatal, intrapartum and post-partum care, thus making pregnant women and their babies vulnerable. This study assessed the knowledge of COVID-19 disease and determinants of correct knowledge among pregnant women at the University College Hospital, Ibadan, Nigeria. Methods: A cross-sectional study was conducted among pregnant women. Data collected were analysed with STATA 16.0 software. Descriptive, bivariate and multinomial regression analyses were performed. The primary outcomes were awareness of COVID-19 (yes/no), correct knowledge, and determinants. Results: Three hundred and eighty participants were interviewed. The mean age was 32 years (±4.78). A little over a third (37%) were aged 30-34 years, married (97.1%), Yoruba (86.6%), had tertiary education (89.0), in skilled occupation (54.6%) and not well-exposed to media (56.7%). The knowledge of COVID-19 was good (15%), fair (79%), and poor (6%). About 19.6%, 66.7% and 13.7% of participants who had poor, fair and good knowledge, respectively, believed that COVID-19 exists (P = 0.007). The factors associated with good knowledge include occupation, income, level of education and exposure to media (P value