Fetal supraventricular tachycardia may lead to low cardiac output, nonimmune hydrops and fetal demise. We are presenting an antenatal case in whom fetal SVT was picked up during examination and was confirmed by ultrasound and fetal echocardiography. Following administration of flecainide to mother, fetal SVT improved, baby did not develop hydrops, pregnancy continued till term and patient delivered vaginally. Awareness regarding existence of fetal arrhythmias is important for obstetricians as early diagnosis and treatment before development of fetal hydrops will not only help in improving fetal outcome but also in reducing cesarean section rates in these cases.