Introduction: Fewer COVID-19 cases and less lethality have been observed at high altitude compared to cases reported at sea level. There are currently no publications reporting clinical behavior of pregnant women with COVID-19 at high altitude. Methods: This is a retrospective study with review of medical records between March 6, 2020 and June 15, 2020. The first thirteen cases of pregnant women with COVID-19 who were attended at Simón Bolívar COVID-19 Hospital, located at 2750 meters above sea level, are described. The cases came from altitudes between 2 035 and 3 502 meters above sea level (masl). Statistical analysis used SPSS, version 19.0. Results: Thirteen cases of pregnant women with COVID-19 confirmed by IgM for SARS-CoV-2 were attended at 2 750 masl (9 022.31 feet) in the Peruvian Andes. Delivery by cesarean section occurred in eight cases (61.5%) and five (38.5%) delivered va...