The COVID-19 pandemic raises various problems that can cause pandemic-related stress in third-trimester pregnant women. This quantitative study was conducted in 10 sub-district health centers around Jakarta using the convenience sampling method. The study was participated by 203 pregnant women. Data were collected offline and online using the SSKTP questionnaire – prenatal version. This study found that third-trimester pregnant women in Jakarta experienced moderate stress (68%, n=138). Based on the findings, the pregnant women with primigravida status, education below high school, not working, and earning above the regional minimum wage experienced more severe stress than other groups. Severe stress was also more prevalent in the pregnant women who had close contact and/or had been infected with COVID-19, had difficulty conceiving, and lost income due to the pandemic. These findings can illustrate the risk of psychosocial problem in third-trimester pregnant women. Screening and early intervention are prominent to reduce pandemic-related stress.