Echocardiography has an important role in the evaluation and treatment of congenital cyanotic heart disease (CCHD). Today, most of them are diagnosed solely on the basis of echocardiography. Most of the patients with CCHD require some form of corrective or palliative surgery. A few undergo a percutaneous intervention. Echocardiography is sufficient for a confident diagnosis in these children. This chapter makes an attempt to focus on the salient echocardiographic features of common CCHD. This chapter covers the classification of CCHD, general aspects to look for in all patients with CCHD, tetralogy of fallot, pulmonary atresia with ventricular septal defect, double outlet right ventricle, tricuspid atresia, d-transposition of great arteries, single ventricle, l-transposition of great arteries, hypoplastic left heart syndrome, pulmonary atresia with intact ventricular septum, Ebstein’s anomaly, total anomalous pulmonary venous connection, truncus arteriosus, and systemic venous anomalies producing cyanosis.