Researchers have shown that some immigrant groups have an increased risk of emergency cesarean section. The authors' aim was to examine the differences in emergency cesarean section rates among immigrant women in Norway with low obstetric risks by using the Robson classification system. We performed secondary analysis on a Norwegian cohort study, where 10,125 women were classified in Robson groups one and three. Women from East, Southeast, and Central Asia, and from Africa had a higher risk of emergency cesarean section. The Robson classification system was a useful tool in comparing cesarean section rates between immigrant groups and host country populations.