We investigated (1) pregnancy and neonatal outcomes in women with and without disabilities, (2) time trends in deliveries, and (3) risks of pregnancy and neonatal complications among women with various disability types and severity. this was a nationwide population-based study merging the database of the Korea National Health Insurance claims, National Health Screening Program for Infants and Children, and Disability Registration System to compare perinatal outcomes in women with and without disabilities. Pregnancy and neonatal outcomes were analyzed during 2007 and 2015, as were time trends of deliveries. Multivariate logistic regression was used to evaluate risk of perinatal outcomes among women with various disability types and severities. Women with disabilities showed higher rates of cesarean section (aOR, 1.73; 95% CI, 1.69-1.77), hypertensive disorders (aOR, 1.74; 95% CI, 1.63-1.86), placenta abruption (aOR, 1.27; 95% CI, 1.12-1.45), placenta previa (aOR, 1.14; 95% CI, 1.05-1.24), stillbirths (aOR, 1.30; 95% CI, 1.17-1.45), preterm births (aOR, 1.67; 95% CI, 1.57-1.78), and LBW (aOR, 1.87; 95% CI, 1.78-1.97) than those without disabilities. From 2007 to 2015, although delivery rate in women with disabilities decreased steeply compared with that in women without disabilities, the rate of cesarean section increased in women with disabilities. Women with intellectual disability and those with vision impairment had the highest number of perinatal complications among women with various types of disabilities. Women with disability had more adverse pregnancy and neonatal outcomes than those without disabilities. Specific disability types & severities are more vulnerable to specific perinatal complications. Worldwide, the prevalence of disabilities, defined as experiencing significant functional impairment in everyday life as an adult, is estimated to be 15.6% 1. The global prevalence of disabilities among fertile women varies greatly from 6.4% to 12%, depending on the country and definition of disability 1-3. In South Korea, data from the National Survey on Persons with Disabilities and Korean Statistical Information Service estimated that the prevalence of disabled persons was 2,668,411 (5.39%) nationwide 4 , and the proportion of disabled women among women of childbearing age was 1.39% 5. Emerging literature suggests that women with disabilities who become mothers are at an increased risk for poor maternal health, pregnancy complications, and adverse birth outcomes 6-8. Some studies revealed that women with intellectual disabilities are associated with a higher incidence of cesarean rate 9 , preeclampsia 10 , and preterm births 9. Women with hearing loss were more likely to have preterm labor and low birth weight (LBW) 11 , and visually impaired women had higher rates of cesarean deliveries than women without disabilities 12. Furthermore, women with physical disabilities were confronted with medical and psychosocial risks, as well as barriers to prenatal care and parenting 13,14. However, most of the studies ha...