Background: Mild elevation of blood pressure was detected after unilateral nephrectomy those who had kidney donation for transplantation. Consequently, female kidney donors at risk for complications such as gestational hypertension caused concern. However, the impact of kidney donation on maternal and fetal outcomes has not been well established in Asian kidney donors. Methods: This study included young female kidney donors under 45years old (YO) at the time of kidney donation in Seoul National University Hospital between 1971 and 2014. In all, 417 female donor participants (<45YO) were enrolled. We conduct to survey by cell phone personally. The questionnaires were approved by institutional review board in our institute. Results: We tried to contact all of 417 female kidney donors. The thirty five donors had no experience of pregnancy, and finally we could have got 225 questionnaires of kidney donors. Donors were divided into two groups according to pregnancy before and after kidney donation. The proportion of predonation pregnancy was 334 cases (86.9%) (Mean age, 38.5±4.8 years; n=171 ), and postdonation pregnancy was 50 cases (13.0%) (Mean age, 28.0±5.1 years; n=36). The year of pregnancy was different between the groups, postdonation pregnancy was detected almost in recent years. There was no difference of fetal outcome such as incidence of prematurity, low-birth weight and fetal loss. Maternal outcome of donors was also no difference between the groups except the proportion of conducting Cesarean section. Donor with pregnancy after donation was more likely to have Cesarean section (46.3%) than those with pregnancy before donation (22.0%). Conclusion: This study revealed that pregnancy outcomes before and after kidney donation had little difference, and further research is needed to evaluate the long-term maternal outcomes.