A pregnancy that is complicated by a uterine prolapse is rare and primarily occurs in multiparous women during their first or second trimester. In the present report, we describe a case of a 31-year-old nulliparous woman who experienced sudden uterine prolapse at 38 weeks' gestation without labor pains. The cervix was congested, the cervical mucosa was partially lacerated, and bleeding was noted; the protruding cervix could not be repositioned into her vagina. Although the cervical congestion worsened over time, she still did not experience any labor pains. She was delivered by emergency cesarean section. Following delivery, the prolapse promptly improved and did not recur before her 1-month postpartum examination. To our knowledge, this is the first case where uterine prolapse occurred in a nulliparous woman during late gestation.