Background: Healthcare providers are under increased pressure since the outbreak of 2019 coronavirus disease (COVID-19). Early studies noted a higher prevalence of insomnia symptoms in healthcare professionals working during the pandemic. Our aim was to evaluate the sleep quality of Portuguese pulmonologists during COVID-19 pandemic. Methods: A questionnaire was sent to Portuguese pulmonologists through e-mail by the Portuguese Pulmonology Society from May 21 to June 16 of 2020. The survey inquired about demographics, workplace conditions, contact with COVID-19 patients, prescription drugs and sleep quality (using Jenkins Sleep Scale). Results: Of 105 participants enrolled (mean age 45.1±13.5 years, 65.7% female), 44.8% reported at least one sleep difficulty. The most common complaint was non-restorative sleep (34.3%). Participants reporting at least one sleep difficulty were more likely to work in the emergency department [ER] (p=0.047) and use anxiolytics (p=0.007), when compared to those without any sleep difficulty. Those that were working in the national health service, ER and COVID ward were more likely to report non-restorative sleep (p=0.033, p=0.046 and p=0.047; respectively). Likewise, anxiolytics use was associated with reported non-restorative sleep (p=0.017) and difficulties falling asleep (p Measurements and Main Results: Healthcare professionals’ accessibility to psychological support should be strengthened, especially in vulnerable groups such as those who work in COVID wards or ER.