Background: A pregnant teenager ‘’A child in child”as to meet the growing demands of fetus in additionto her own growing needs, thus putting her in a stressful situation. Teenage pregnancy is dangerous forthe mother, child and the community. Medical complications such as preterm labor, pregnancy-inducedhypertension, anemia and low birth weight babies are strongly associated with adolescent pregnancy. Suchpregnancies are seen mostly amongst the poorer and less educated sections of the society.Aim: To evaluate the maternal and perinatal outcome in teenage pregnancy in a tertiary care center.Objectives: To compare the maternal and perinatal outcome in teenage and adult pregnanciesDesign: A prospective studySetting: Department of Obstetrics and Gynecology, Sri Siddhartha medical college, Tumkur.Materials and Method: This study was undertaken at Sri Siddhartha medical college and hospital researchcentre tumakuru between October 2018 to October 2020, among the married pregnant women visiting toantenatal OPD and inpatients in the department of the OBG between 18 to 19 yrs as per the inclusion andexclusion criteria.Results: Teenage pregnancy may cause a significant obstetric complication Anaemia, preterm delivery,prom, pph, low birth weight babies, NICU admissions, respiratory distress syndrome were found to behigher among teenage mothers when compared to adult mothers.Conclusion: Teenage pregnancy was associated with increased incidence of anaemia and contract ed pelvis.Consequently there were higher incidence of lscs and PPH. There was in creased incidence of low birthweight babies, RDS, NICU admissions among the ba bies born to teenage mothers. Teenage pregnancy isassociated with increased mater nal and perinatal morbidity