Background and ObjectiveaaObstetricians play a pivotal role in pregnancy and delivery. Also, they frequently encounter common comorbidity, such as pregnancy-related depression. We investigated the depression and sleep status of obstetricians in South Korea. MethodsaaThis is a questionnaire-based cross-sectional survey, carried out from December 2019 to January 2020. We asked board-certificated obstetricians to complete a series of questionnaires, including demographic information, the Beck Depression Inventory-2 (K-BDI), Pittsburgh sleep quality index (K-PSQI), insomnia severity index, Epworth Sleepiness Scale, and an acronym Snoring, Tiredness, Observed apneas, and high blood Pressure (STOP). ResultsaaA total of 107 obstetricians completed the questionnaires. Their mean age was 50.60 ± 7.83 years, and 83 (77.6%) were male. The average years after the board certification was 17.80 ± 7.62 years. They worked 68.90 ± 19.61 hours a week, and slept for 7 hours (06:59:20.75 ± 01:08:21.63), approximately. The number of duty days and deliveries in the last month were 6.44 ± 4.35 and 28.95 ± 25.16 per month, respectively. Forty-five (42.1%) obstetricians had poor sleep quality, 22 (20.6%) had suspicious insomnia, and 45 (42.1%) had significant depression. In multiple regression analyses, K-PSQI (standardized β = 0.492, p < 0.001) and the number of deliveries in the last month (standardized β = 0.453, p < 0.001) showed significant influence upon K-BDI. ConclusionsaaThe risk of depression increased by 8.8% as another monthly delivery was performed. A point increase in K-PSQI increased the risk of depression by 49.6%. The worse the sleep quality, and the more frequent the deliveries, the more depressed the obstetrician was.